Overview 351 matches · 1 in Waratek scope · 0 protected · 22 exploited · 5 CISA KEV · 77 public PoC · 77 EPSS ≥ 0.5
351matches
1in Waratek scope0.3%
0protected0.0%
22exploited6.3%
5CISA KEV1.4%
77public PoC21.9%
77EPSS ≥ 0.521.9%
Protected by Waratek
0
0.0%
Rule in development
0
0.0%
Mitigation candidate
1
0.3%
No exploit published
0
0.0%
Outside Waratek scope
59
16.8%
Not applicable
291
82.9%
Withdrawn CVE
0
0.0%
blocked by ARMR today
0
0.0%
partly blocked
0
0.0%
not blocked
351
100.0%
not established
0
0.0%
unrecorded
0
0.0%
split by
peak 44 / year
19963
Not applicable3
High2
Medium1
not blocked3
Working exploit published2
Forecast only1
19973
Not applicable3
High2
Medium1
not blocked3
Working exploit published2
No public exploit1
19981
Not applicable1
High1
not blocked1
No public exploit1
19998
Not applicable8
High4
Medium4
not blocked8
Working exploit published4
No public exploit4
20006
Not applicable6
Medium6
not blocked6
Working exploit published2
No public exploit4
200112
Not applicable12
Critical1
High1
Medium8
Low2
not blocked12
Working exploit published4
No public exploit8
200220
Mitigation candidate1
Outside Waratek scope2
Not applicable17
High9
Medium10
Low1
not blocked20
Exploited1
Working exploit published7
No public exploit12
200316
Not applicable16
High3
Medium13
not blocked16
Working exploit published3
No public exploit13
200420
Not applicable20
High10
Medium8
Low2
not blocked20
Working exploit published3
No public exploit17
200510
Not applicable10
High3
Medium7
not blocked10
Working exploit published3
Forecast only1
No public exploit6
20064
Not applicable4
High1
Medium3
not blocked4
Working exploit published3
No public exploit1
200715
Outside Waratek scope1
Not applicable14
High1
Medium13
Low1
not blocked15
Working exploit published3
No public exploit12
200811
Outside Waratek scope1
Not applicable10
High1
Medium8
Low2
not blocked11
Working exploit published2
Forecast only1
No public exploit8
200913
Not applicable13
Critical1
High4
Medium7
Low1
not blocked13
Exploited1
Working exploit published1
No public exploit11
201011
Outside Waratek scope1
Not applicable10
High1
Medium9
Low1
not blocked11
Working exploit published1
No public exploit10
201110
Outside Waratek scope1
Not applicable9
High1
Medium8
Low1
not blocked10
Exploited1
Working exploit published6
Forecast only1
No public exploit2
20127
Outside Waratek scope2
Not applicable5
Medium5
Low2
not blocked7
Working exploit published2
No public exploit5
20135
Outside Waratek scope1
Not applicable4
High1
Medium4
not blocked5
No public exploit5
201412
Outside Waratek scope4
Not applicable8
Medium12
not blocked12
Working exploit published1
Forecast only1
No public exploit10
20154
Not applicable4
Medium4
not blocked4
Forecast only1
No public exploit3
20164
Outside Waratek scope1
Not applicable3
High3
Medium1
not blocked4
Working exploit published1
Forecast only1
No public exploit2
201711
Outside Waratek scope4
Not applicable7
Critical4
High7
not blocked11
Exploited5
No public exploit6
201813
Outside Waratek scope10
Not applicable3
Critical1
High5
Medium7
not blocked13
Exploited4
Working exploit published1
No public exploit8
201915
Outside Waratek scope9
Not applicable6
Critical1
High8
Medium6
not blocked15
Exploited4
Working exploit published1
No public exploit10
20206
Outside Waratek scope5
Not applicable1
Critical1
High2
Medium3
not blocked6
Exploited1
Forecast only4
No public exploit1
202118
Outside Waratek scope13
Not applicable5
Critical6
High9
Medium3
not blocked18
Exploited3
Working exploit published1
Forecast only10
No public exploit4
202212
Outside Waratek scope2
Not applicable10
Critical5
High5
Medium2
not blocked12
Proof of concept only1
Forecast only3
No public exploit8
20238
Not applicable8
Critical2
High4
Medium2
not blocked8
Exploited1
Proof of concept only1
Forecast only1
No public exploit5
202414
Outside Waratek scope2
Not applicable12
Critical4
High6
Medium4
not blocked14
Exploited1
Working exploit published2
Proof of concept only3
No public exploit8
202515
Not applicable15
Critical1
High11
Medium3
not blocked15
Proof of concept only1
No public exploit14
202644
Not applicable44
Critical7
High25
Medium11
Low1
not blocked44
Working exploit published1
Proof of concept only2
No public exploit41
19961999200220052008201120142017202020232026
| CVE | Severity | Published▾ | Status | Exploitation | Description |
|---|---|---|---|---|---|
| CVE-2026-93546 | High | 2026-10-01 | Not applicable | No public exploit | Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces. |
| CVE-2026-79768 | Medium | 2026-10-01 | Not applicable | No public exploit | Path equivalence: '/./' (single dot directory) vulnerability in Apache HTTP Server's mod_userdir module when configured with absolute non-wildcard UserDir directive (the 2nd form in https://httpd.apache.org/docs/2.4/mod/mod_userdir.html#userdir) This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. |
| CVE-2026-73637 | High | 2026-10-01 | Not applicable | No public exploit | Use after free in mod_auth_digest in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an unauthenticated remote client to cause authentication state corruption via concurrent Digest authentication requests when AuthDigestNcCheck is enabled or AuthDigestNonceLifetime is set to 0. Users are recommended to upgrade to version 2.4.69, which fixes this issue. |
| CVE-2026-73636 | High | 2026-10-01 | Not applicable | No public exploit | Authentication bypass by capture-replay in mod_auth_digest in Apache Software Foundation Apache HTTP Server 2.4.x on all platforms allows a man-in-the-middle (MITM) attacker to replay captured digest authentication credentials via crafted requests that trigger garbage collection of the client's shared memory entry when AuthDigestNonceLifetime is set to 0. Users are recommended to upgrade to version 2.4.69, which fixes this issue. |
| CVE-2026-63718 | High | 2026-10-01 | Not applicable | No public exploit | Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') response smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi and a crafted uwsgi response with Transfer-Encoding. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.68. |
| CVE-2026-63686 | High | 2026-10-01 | Not applicable | No public exploit | A NULL pointer dereference in mod_xml2enc in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an untrusted backend server to cause a denial of service via a proxied response with a charset whose conversion partially succeeds then fails. Users are recommended to upgrade to version 2.4.69, which fixes this issue. |
| CVE-2026-63292 | High | 2026-10-01 | Not applicable | No public exploit | Stack-based buffer overflow in mod_vhost_alias in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows a remote client to cause a denial of service or potentially execute arbitrary code via an HTTP request with a Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised above the default. Users are recommended to upgrade to version 2.4.69, which fixes this issue. |
| CVE-2026-63045 | High | 2026-10-01 | Not applicable | No public exploit | Improper validation of FTP PASV reply address in mod_proxy_ftp in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows, in forward proxy configurations, an untrusted FTP server to cause the proxy to open a data connection to an arbitrary third-party host via a crafted PASV response. Users are recommended to upgrade to version 2.4.69, which fixes this issue. |
| CVE-2026-59797 | Critical | 2026-10-01 | Not applicable | No public exploit | Improper Privilege Management vulnerability in Apache HTTP Server's mod_ssl via SSLRequire and file-related expressions. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. |
| CVE-2026-59685 | High | 2026-10-01 | Not applicable | No public exploit | Out-of-bounds Write vulnerability in Apache HTTP Server on Windows while processing paths with 8.3 names that may grow when expanded. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. |
| CVE-2026-58415 | Medium | 2026-10-01 | Not applicable | No public exploit | Internal state files accessible to external parties in mod_dav_fs in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows a remote client to read WebDAV dead properties of resources it cannot author via a GET request for the .DAV state directory This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. |
| CVE-2026-57941 | Critical | 2026-10-01 | Not applicable | No public exploit | Use After Free vulnerability in Apache HTTP Server's mod_http2 via shared session->bbtmp re-entrancy This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. |
| CVE-2026-56449 | High | 2026-10-01 | Not applicable | No public exploit | Out-of-bounds Write vulnerability in Apache HTTP Server's mod_proxy_html with crafted HTTP response bodies. This issue affects Apache HTTP Server version 2.4.68. |
| CVE-2026-56154 | Critical | 2026-10-01 | Not applicable | No public exploit | Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...}) This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. |
| CVE-2026-56153 | High | 2026-10-01 | Not applicable | No public exploit | Out-of-bounds Write vulnerability in Apache HTTP Server's mod_charset_lite. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. |
| CVE-2026-48005 | High | 2026-10-01 | Not applicable | No public exploit | Missing authentication checks in mod_auth_digest in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an unauthenticated remote client to cause a denial of service (forced re-authentication) via forged Authorization headers when Digest authentication is enabled with AuthDigestNcCheck . Users are recommended to upgrade to version 2.4.69, which fixes this issue. |
| CVE-2026-47360 | High | 2026-10-01 | Not applicable | No public exploit | Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache HTTP Server's mod_session_cookie module. When SessionCookieRemove changes across internal redirects, the session cookie may still be passed to a backend server. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. |
| CVE-2026-46729 | High | 2026-10-01 | Not applicable | No public exploit | NULL Pointer Dereference vulnerability in Apache HTTP Servers mod_heartmonitor over unicast listener. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. |
| CVE-2026-42528 | Medium | 2026-10-01 | Not applicable | No public exploit | A memory calculation bug in mod_dav in Apache httpd 2.4.67 and earlier allows an attacker with permission to create WebDAV locks to crash server child processes. Users are recommended to upgrade to version 2.4.69, which fixes this issue |
| CVE-2026-42356 | Low | 2026-10-01 | Not applicable | No public exploit | Deployment of wrong handler vulnerability in Apache HTTP Server allows the target of some internal redirects from CGI programs to also be treated as CGI and executed. The target must already be in a directory enabled for CGI and have no other extension understood by mod_mime. This issue affects Apache HTTP Server: from 2.4.60 through 2.4.68. |
| CVE-2026-49975 | High | 2026-06-08 | Not applicable | Proof of concept only | Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of service via malicious HTTP requests. This issue affects Apache HTTP Server: from 2.4.17 through 2.4.67. |
| CVE-2026-48913 | High | 2026-06-08 | Not applicable | No public exploit | Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67. |
| CVE-2026-44631 | Critical | 2026-06-08 | Not applicable | No public exploit | Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue. |
| CVE-2026-44186 | High | 2026-06-08 | Not applicable | No public exploit | Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in the mod_proxy_ftp module in Apache HTTP Server with an attacker controlled backend FTP server. This issue affects undefined: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue. |
| CVE-2026-44185 | High | 2026-06-08 | Not applicable | No public exploit | Buffer Over-read vulnerability in Apache HTTP Server via outbound OCSP requests to an attacker controlled OCSP server This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue. |
| CVE-2026-44119 | Medium | 2026-06-08 | Not applicable | No public exploit | Improper Privilege Management vulnerability in Apache HTTP Server 2.4.67 and earlier allows local .htaccess authors to read files with the privileges of the httpd user. This issue affects Apache HTTP Server: from through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue. |
| CVE-2026-43951 | Medium | 2026-06-08 | Not applicable | No public exploit | Out-of-bounds Read vulnerability in Apache HTTP Server with mod_headers and mod_mime and multiple response languages. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. |
| CVE-2026-42536 | High | 2026-06-08 | Not applicable | Proof of concept only | Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and untrusted content This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue. |
| CVE-2026-42535 | Critical | 2026-06-08 | Not applicable | No public exploit | A path handling issue in mod_dav_fs in Apache 2.4.67 and earlier allows a WebDAV content author to directly manipulate trusted DAV property databases, potentially causing child process crashes. Users are recommended to upgrade to version 2.4.68, which fixes this issue. |
| CVE-2026-34356 | High | 2026-06-08 | Not applicable | No public exploit | Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and ProxyPassReverseCookie* This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue. |
| CVE-2026-34355 | High | 2026-06-08 | Not applicable | No public exploit | A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend. Users are recommended to upgrade to version 2.4.68, which fixes this issue. |
| CVE-2026-29170 | Medium | 2026-06-08 | Not applicable | No public exploit | A cross-site scripting vulnerability exists in mod_proxy_ftp's HTML directory list generation in Apache HTTP Server 2.4.67 and earlier when listing FTP directory contents either via forward or reverse proxy configuration. Users are recommended to upgrade to version 2.4.68, which fixes this issue. |
| CVE-2026-29167 | Critical | 2026-06-08 | Not applicable | No public exploit | Use After Free vulnerability in Apache HTTP Server with mod_ldap in per-directory configuration This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue. |
| CVE-2026-29168 | High | 2026-05-05 | Not applicable | No public exploit | Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's mod_md via OCSP response data. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue. |
| CVE-2026-28780 | Critical | 2026-05-05 | Not applicable | No public exploit | Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server. If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer. This issue affects Apache HTTP Server: through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue. |
| CVE-2026-34059 | High | 2026-05-04 | Not applicable | No public exploit | Buffer Over-read vulnerability in Apache HTTP Server. This issue affects Apache HTTP Server: through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue. |
| CVE-2026-34032 | Medium | 2026-05-04 | Not applicable | No public exploit | Improper Null Termination, Out-of-bounds Read vulnerability in Apache HTTP Server. This issue affects Apache HTTP Server: through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue. |
| CVE-2026-33857 | Medium | 2026-05-04 | Not applicable | No public exploit | Out-of-bounds Read vulnerability in mod_proxy_ajp of Apache HTTP Server. This issue affects Apache HTTP Server: through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue. |
| CVE-2026-33523 | Medium | 2026-05-04 | Not applicable | No public exploit | HTTP response splitting vulnerability in multiple Apache HTTP Server modules with untrusted or compromised backend servers. This issue affects Apache HTTP Server: from through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue. |
| CVE-2026-33007 | Medium | 2026-05-04 | Not applicable | No public exploit | A NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier allows an unauthenticated remote user to crash a child process in a caching forward proxy configuration. Users are recommended to upgrade to version 2.4.67, which fixes this issue. |
| CVE-2026-33006 | Medium | 2026-05-04 | Not applicable | No public exploit | A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker. Users are recommended to upgrade to version 2.4.67, which fixes this issue. |
| CVE-2026-29169 | High | 2026-05-04 | Not applicable | No public exploit | A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs. The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0. Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock. |
| CVE-2026-24072 | High | 2026-05-04 | Not applicable | No public exploit | An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess authors to read files with the privileges of the httpd user. Users are recommended to upgrade to version 2.4.67, which fixes this issue. |
| CVE-2026-23918 | High | 2026-05-04 | Not applicable | Working exploit published | Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol. This issue affects Apache HTTP Server: 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue. |
| CVE-2025-66200 | Medium | 2025-12-05 | Not applicable | No public exploit | mod_userdir+suexec bypass via AllowOverride FileInfo vulnerability in Apache HTTP Server. Users with access to use the RequestHeader directive in htaccess can cause some CGI scripts to run under an unexpected userid. This issue affects Apache HTTP Server: from 2.4.7 through 2.4.65. Users are recommended to upgrade to version 2.4.66, which fixes the issue. |
| CVE-2025-65082 | Medium | 2025-12-05 | Not applicable | No public exploit | Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache HTTP Server through environment variables set via the Apache configuration unexpectedly superseding variables calculated by the server for CGI programs. This issue affects Apache HTTP Server from 2.4.0 through 2.4.65. Users are recommended to upgrade to version 2.4.66 which fixes the issue. |
| CVE-2025-59775 | High | 2025-12-05 | Not applicable | No public exploit | Server-Side Request Forgery (SSRF) vulnerability in Apache HTTP Server on Windows with AllowEncodedSlashes On and MergeSlashes Off allows to potentially leak NTLM hashes to a malicious server via SSRF and malicious requests or content Users are recommended to upgrade to version 2.4.66, which fixes the issue. |
| CVE-2025-58098 | High | 2025-12-05 | Not applicable | No public exploit | Apache HTTP Server 2.4.65 and earlier with Server Side Includes (SSI) enabled and mod_cgid (but not mod_cgi) passes the shell-escaped query string to #exec cmd="..." directives. This issue affects Apache HTTP Server before 2.4.66. Users are recommended to upgrade to version 2.4.66, which fixes the issue. |
| CVE-2025-55753 | High | 2025-12-05 | Not applicable | No public exploit | An integer overflow in the case of failed ACME certificate renewal leads, after a number of failures (~30 days in default configurations), to the backoff timer becoming 0. Attempts to renew the certificate then are repeated without delays until it succeeds. This issue affects Apache HTTP Server: from 2.4.30 before 2.4.66. Users are recommended to upgrade to version 2.4.66, which fixes the issue. |
| CVE-2025-54090 | Medium | 2025-07-23 | Not applicable | No public exploit | A bug in Apache HTTP Server 2.4.64 results in all "RewriteCond expr ..." tests evaluating as "true". Users are recommended to upgrade to version 2.4.65, which fixes the issue. |
| CVE-2025-53020 | High | 2025-07-10 | Not applicable | No public exploit | Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server. This issue affects Apache HTTP Server: from 2.4.17 up to 2.4.63. Users are recommended to upgrade to version 2.4.64, which fixes the issue. |
| CVE-2025-49812 | High | 2025-07-10 | Not applicable | No public exploit | In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade. Only configurations using "SSLEngine optional" to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade. |
| CVE-2025-49630 | High | 2025-07-10 | Not applicable | No public exploit | In certain proxy configurations, a denial of service attack against Apache HTTP Server versions 2.4.26 through to 2.4.63 can be triggered by untrusted clients causing an assertion in mod_proxy_http2. Configurations affected are a reverse proxy is configured for an HTTP/2 backend, with ProxyPreserveHost set to "on". |
| CVE-2025-23048 | Critical | 2025-07-10 | Not applicable | Proof of concept only | In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption. Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host. |
| CVE-2024-47252 | High | 2025-07-10 | Not applicable | No public exploit | Insufficient escaping of user-supplied data in mod_ssl in Apache HTTP Server 2.4.63 and earlier allows an untrusted SSL/TLS client to insert escape characters into log files in some configurations. In a logging configuration where CustomLog is used with "%{varname}x" or "%{varname}c" to log variables provided by mod_ssl such as SSL_TLS_SNI, no escaping is performed by either mod_log_config or mod_ssl and unsanitized data provided by the client may appear in log files. |
| CVE-2024-43394 | High | 2025-07-10 | Not applicable | No public exploit | Server-Side Request Forgery (SSRF) in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via mod_rewrite or apache expressions that pass unvalidated request input. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.63. Note: The Apache HTTP Server Project will be setting a higher bar for accepting vulnerability reports regarding SSRF via UNC paths. The server offers limited protection against administrators directing the server to open UNC paths. Windows servers should limit the hosts they will connect over via SMB based on the nature of NTLM authentication. |
| CVE-2024-43204 | High | 2025-07-10 | Not applicable | No public exploit | SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker. Requires an unlikely configuration where mod_headers is configured to modify the Content-Type request or response header with a value provided in the HTTP request. Users are recommended to upgrade to version 2.4.64 which fixes this issue. |
| CVE-2024-42516 | High | 2025-07-10 | Not applicable | No public exploit | HTTP response splitting in the core of Apache HTTP Server allows an attacker who can manipulate the Content-Type response headers of applications hosted or proxied by the server can split the HTTP response. This vulnerability was described as CVE-2023-38709 but the patch included in Apache HTTP Server 2.4.59 did not address the issue. Users are recommended to upgrade to version 2.4.64, which fixes this issue. |
| CVE-2025-3891 | High | 2025-04-29 | Not applicable | No public exploit | A flaw was found in the mod_auth_openidc module for Apache httpd. This flaw allows a remote, unauthenticated attacker to trigger a denial of service by sending an empty POST request when the OIDCPreservePost directive is enabled. The server crashes consistently, affecting availability. |
| CVE-2024-40898 | Critical | 2024-07-18 | Not applicable | No public exploit | SSRF in Apache HTTP Server on Windows with mod_rewrite in server/vhost context, allows to potentially leak NTML hashes to a malicious server via SSRF and malicious requests. Users are recommended to upgrade to version 2.4.62 which fixes this issue. |
| CVE-2024-40725 | Medium | 2024-07-18 | Not applicable | Proof of concept only | A partial fix for CVE-2024-39884 in the core of Apache HTTP Server 2.4.61 ignores some use of the legacy content-type based configuration of handlers. "AddType" and similar configuration, under some circumstances where files are requested indirectly, result in source code disclosure of local content. For example, PHP scripts may be served instead of interpreted. Users are recommended to upgrade to version 2.4.62, which fixes this issue. |
| CVE-2024-39884 | Medium | 2024-07-04 | Not applicable | No public exploit | A regression in the core of Apache HTTP Server 2.4.60 ignores some use of the legacy content-type based configuration of handlers. "AddType" and similar configuration, under some circumstances where files are requested indirectly, result in source code disclosure of local content. For example, PHP scripts may be served instead of interpreted. Users are recommended to upgrade to version 2.4.61, which fixes this issue. |
| CVE-2024-39573 | High | 2024-07-01 | Not applicable | No public exploit | Potential SSRF in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to cause unsafe RewriteRules to unexpectedly setup URL's to be handled by mod_proxy. Users are recommended to upgrade to version 2.4.60, which fixes this issue. |
| CVE-2024-38477 | High | 2024-07-01 | Not applicable | No public exploit | null pointer dereference in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows an attacker to crash the server via a malicious request. Users are recommended to upgrade to version 2.4.60, which fixes this issue. |
| CVE-2024-38476 | Critical | 2024-07-01 | Not applicable | No public exploit | Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerably to information disclosure, SSRF or local script execution via backend applications whose response headers are malicious or exploitable. Users are recommended to upgrade to version 2.4.60, which fixes this issue. |
| CVE-2024-38475 | Critical | 2024-07-01 | Not applicable | Exploited | Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure. Substitutions in server context that use a backreferences or variables as the first segment of the substitution are affected. Some unsafe RewiteRules will be broken by this change and the rewrite flag "UnsafePrefixStat" can be used to opt back in once ensuring the substitution is appropriately constrained. |
| CVE-2024-38474 | Critical | 2024-07-01 | Not applicable | No public exploit | Substitution encoding issue in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows attacker to execute scripts in directories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant to only to be executed as CGI. Users are recommended to upgrade to version 2.4.60, which fixes this issue. Some RewriteRules that capture and substitute unsafely will now fail unless rewrite flag "UnsafeAllow3F" is specified. |
| CVE-2024-38473 | High | 2024-07-01 | Not applicable | Working exploit published | Encoding problem in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows request URLs with incorrect encoding to be sent to backend services, potentially bypassing authentication via crafted requests. Users are recommended to upgrade to version 2.4.60, which fixes this issue. |
| CVE-2024-38472 | High | 2024-07-01 | Not applicable | Working exploit published | SSRF in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via SSRF and malicious requests or content Users are recommended to upgrade to version 2.4.60 which fixes this issue. Note: Existing configurations that access UNC paths will have to configure new directive "UNCList" to allow access during request processing. |
| CVE-2024-36387 | Medium | 2024-07-01 | Not applicable | No public exploit | Serving WebSocket protocol upgrades over a HTTP/2 connection could result in a Null Pointer dereference, leading to a crash of the server process, degrading performance. |
| CVE-2024-27316 | High | 2024-04-04 | Not applicable | Proof of concept only | HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion. |
| CVE-2024-24795 | Medium | 2024-04-04 | Outside Waratek scope | No public exploit | HTTP Response splitting in multiple modules in Apache HTTP Server allows an attacker that can inject malicious response headers into backend applications to cause an HTTP desynchronization attack. Users are recommended to upgrade to version 2.4.59, which fixes this issue. |
| CVE-2023-38709 | High | 2024-04-04 | Outside Waratek scope | Proof of concept only | Faulty input validation in the core of Apache allows malicious or exploitable backend/content generators to split HTTP responses. This issue affects Apache HTTP Server: through 2.4.58. |
| CVE-2023-45802 | Medium | 2023-10-23 | Not applicable | No public exploit | When a HTTP/2 stream was reset (RST frame) by a client, there was a time window were the request's memory resources were not reclaimed immediately. Instead, de-allocation was deferred to connection close. A client could send new requests and resets, keeping the connection busy and open and causing the memory footprint to keep on growing. On connection close, all resources were reclaimed, but the process might run out of memory before that. This was found by the reporter during testing of CVE-2023-44487 (HTTP/2 Rapid Reset Exploit) with their own test client. During "normal" HTTP/2 use, the probability to hit this bug is very low. The kept memory would not become noticeable before the connection closes or times out. Users are recommended to upgrade to version 2.4.58, which fixes the issue. |
| CVE-2023-43622 | High | 2023-10-23 | Not applicable | Proof of concept only | An attacker, opening a HTTP/2 connection with an initial window size of 0, was able to block handling of that connection indefinitely in Apache HTTP Server. This could be used to exhaust worker resources in the server, similar to the well known "slow loris" attack pattern. This has been fixed in version 2.4.58, so that such connection are terminated properly after the configured connection timeout. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.57. Users are recommended to upgrade to version 2.4.58, which fixes the issue. |
| CVE-2023-31122 | High | 2023-10-23 | Not applicable | No public exploit | Out-of-bounds Read vulnerability in mod_macro of Apache HTTP Server.This issue affects Apache HTTP Server: through 2.4.57. |
| CVE-2023-27522 | High | 2023-03-07 | Not applicable | No public exploit | HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.55. Special characters in the origin response header can truncate/split the response forwarded to the client. |
| CVE-2023-25690 | Critical | 2023-03-07 | Not applicable | Exploited | Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request Smuggling attack. Configurations are affected when mod_proxy is enabled along with some form of RewriteRule or ProxyPassMatch in which a non-specific pattern matches some portion of the user-supplied request-target (URL) data and is then re-inserted into the proxied request-target using variable substitution. For example, something like: RewriteEngine on RewriteRule "^/here/(.*)" "http://example.com:8080/elsewhere?$1"; [P] ProxyPassReverse /here/ http://example.com:8080/ Request splitting/smuggling could result in bypass of access controls in the proxy server, proxying unintended URLs to existing origin servers, and cache poisoning. Users are recommended to update to at least version 2.4.56 of Apache HTTP Server. |
| CVE-2022-37436 | Medium | 2023-01-17 | Not applicable | Forecast only | Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated early, resulting in some headers being incorporated into the response body. If the later headers have any security purpose, they will not be interpreted by the client. |
| CVE-2022-36760 | Critical | 2023-01-17 | Not applicable | No public exploit | Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.54 and prior versions. |
| CVE-2006-20001 | High | 2023-01-17 | Not applicable | No public exploit | A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a pool (heap) memory location beyond the header value sent. This could cause the process to crash. This issue affects Apache HTTP Server 2.4.54 and earlier. |
| CVE-2022-31813 | Critical | 2022-06-09 | Not applicable | No public exploit | Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded-* headers to the origin server based on client side Connection header hop-by-hop mechanism. This may be used to bypass IP based authentication on the origin server/application. |
| CVE-2022-30556 | High | 2022-06-09 | Not applicable | No public exploit | Apache HTTP Server 2.4.53 and earlier may return lengths to applications calling r:wsread() that point past the end of the storage allocated for the buffer. |
| CVE-2022-30522 | High | 2022-06-09 | Not applicable | Forecast only | If Apache HTTP Server 2.4.53 is configured to do transformations with mod_sed in contexts where the input to mod_sed may be very large, mod_sed may make excessively large memory allocations and trigger an abort. |
| CVE-2022-29404 | High | 2022-06-09 | Not applicable | No public exploit | In Apache HTTP Server 2.4.53 and earlier, a malicious request to a lua script that calls r:parsebody(0) may cause a denial of service due to no default limit on possible input size. |
| CVE-2022-28615 | Critical | 2022-06-09 | Not applicable | No public exploit | Apache HTTP Server 2.4.53 and earlier may crash or disclose information due to a read beyond bounds in ap_strcmp_match() when provided with an extremely large input buffer. While no code distributed with the server can be coerced into such a call, third-party modules or lua scripts that use ap_strcmp_match() may hypothetically be affected. |
| CVE-2022-28614 | Medium | 2022-06-09 | Not applicable | No public exploit | The ap_rwrite() function in Apache HTTP Server 2.4.53 and earlier may read unintended memory if an attacker can cause the server to reflect very large input using ap_rwrite() or ap_rputs(), such as with mod_luas r:puts() function. Modules compiled and distributed separately from Apache HTTP Server that use the 'ap_rputs' function and may pass it a very large (INT_MAX or larger) string must be compiled against current headers to resolve the issue. |
| CVE-2022-28330 | Medium | 2022-06-09 | Not applicable | No public exploit | Apache HTTP Server 2.4.53 and earlier on Windows may read beyond bounds when configured to process requests with the mod_isapi module. |
| CVE-2022-26377 | High | 2022-06-09 | Not applicable | Proof of concept only | Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.53 and prior versions. |
| CVE-2022-23943 | Critical | 2022-03-14 | Not applicable | Forecast only | Out-of-bounds Write vulnerability in mod_sed of Apache HTTP Server allows an attacker to overwrite heap memory with possibly attacker provided data. This issue affects Apache HTTP Server 2.4 version 2.4.52 and prior versions. |
| CVE-2022-22721 | Critical | 2022-03-14 | Outside Waratek scope | No public exploit | If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit systems an integer overflow happens which later causes out of bounds writes. This issue affects Apache HTTP Server 2.4.52 and earlier. |
| CVE-2022-22720 | Critical | 2022-03-14 | Outside Waratek scope | No public exploit | Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered discarding the request body, exposing the server to HTTP Request Smuggling |
| CVE-2022-22719 | High | 2022-03-14 | Not applicable | Forecast only | A carefully crafted request body can cause a read to a random memory area which could cause the process to crash. This issue affects Apache HTTP Server 2.4.52 and earlier. |
| CVE-2021-44790 | Critical | 2021-12-20 | Outside Waratek scope | Working exploit published | A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and earlier. |
| CVE-2021-44224 | High | 2021-12-20 | Outside Waratek scope | Forecast only | A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included). |
| CVE-2021-42013 | Critical | 2021-10-07 | Not applicable | Exploited | It was found that the fix for CVE-2021-41773 in Apache HTTP Server 2.4.50 was insufficient. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration "require all denied", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue only affects Apache 2.4.49 and Apache 2.4.50 and not earlier versions. |
| CVE-2021-41773 | Critical | 2021-10-05 | Not applicable | Exploited | A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration "require all denied", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions. The fix in Apache HTTP Server 2.4.50 was found to be incomplete, see CVE-2021-42013. |
| CVE-2021-41524 | High | 2021-10-05 | Not applicable | No public exploit | While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request processing, allowing an external source to DoS the server. This requires a specially crafted request. The vulnerability was recently introduced in version 2.4.49. No exploit is known to the project. |
| CVE-2021-40438 | Critical | 2021-09-16 | Outside Waratek scope | Exploited | A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier. |
| CVE-2021-39275 | Critical | 2021-09-16 | Outside Waratek scope | No public exploit | ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier. |