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Oracle Critical Patch Update April 2026

Released April 2026 · Oracle's advisory ↗ · ← Critical Patch Update, January 2026 · Security Patch Update, May 2026 →

421 CVEs in this release, one square each

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Share this chart Oracle Critical Patch Update April 2026, one square per CVE: 172 Java CVEs, 16 protected by Waratek, 8 exploited, 249 other CVEs in this release.

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16Protected by Waratek4Mitigation candidate152No exploit published10Outside Waratek scope239Not applicable 8Exploited, marked by the ring

No exploit published. For 51 of them, Oracle's security advisory is the source of public detail.

Protected by Waratek. Waratek RASP can block exploitation of these on systems that have not applied the patch yet.

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Including CVEs outside Waratek scope✕
Overview 239 matches · 0 in Waratek scope · 0 protected · 2 exploited · 0 CISA KEV · 7 public PoC · 4 EPSS ≥ 0.5
239matches 0in Waratek scope0.0% 0protected0.0% 2exploited0.8% 0CISA KEV0.0% 7public PoC2.9% 4EPSS ≥ 0.51.7%
Protected by Waratek 0 0.0% Rule in development 0 0.0% Mitigation candidate 0 0.0% No exploit published 0 0.0% Outside Waratek scope 0 0.0% Not applicable 239 100.0% Withdrawn CVE 0 0.0%
Critical 17 7.1% High 101 42.3% Medium 108 45.2% Low 13 5.4% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 0 0.0% partly blocked 0 0.0% not blocked 239 100.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 2 0.8% Working exploit published 2 0.8% Proof of concept only 26 10.9% Forecast only 0 0.0% No public exploit 209 87.4%
split by peak 109 / quarter
Not applicable: 239 Low: 13Medium: 108High: 101Critical: 17 not blocked: 239 No public exploit: 209Proof of concept only: 26Working exploit published: 2Exploited: 2
Q1 241 Not applicable1 Medium1 not blocked1 No public exploit1 Q2 243 Not applicable3 Critical1 High1 Medium1 not blocked3 Proof of concept only1 No public exploit2 Q3 241 Not applicable1 High1 not blocked1 Exploited1 Q4 240 Q1 255 Not applicable5 High4 Medium1 not blocked5 Proof of concept only3 No public exploit2 Q2 258 Not applicable8 High4 Medium4 not blocked8 Proof of concept only1 No public exploit7 Q3 2532 Not applicable32 Critical1 High13 Medium14 Low4 not blocked32 Working exploit published2 Proof of concept only7 No public exploit23 Q4 2536 Not applicable36 Critical3 High16 Medium16 Low1 not blocked36 Exploited1 Proof of concept only4 No public exploit31 Q1 26109 Not applicable109 Critical12 High54 Medium39 Low4 not blocked109 Proof of concept only9 No public exploit100 Q2 2644 Not applicable44 High8 Medium32 Low4 not blocked44 Proof of concept only1 No public exploit43
Q1 24Q2 24Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26
239 matches Sign in to download these CVEs as CSV or JSON, or to follow them in a feed. ‹ prev page 3 of 3 next ›
CVE Severity Published▾ Status Exploitation Description
CVE-2025-4877 Medium 2025-08-20 Not applicable No public exploit There's a vulnerability in the libssh package where when a libssh consumer passes in an unexpectedly large input buffer to ssh_get_fingerprint_hash() function. In such cases the bin_to_base64() function can experience an integer overflow leading to a memory under allocation, when that happens it's possible that the program perform out of bounds write leading to a heap corruption. This issue affects only 32-bits builds of libssh.
CVE-2025-8961 Low 2025-08-14 Not applicable Proof of concept only A weakness has been identified in LibTIFF 4.7.0. This affects the function main of the file tiffcrop.c of the component tiffcrop. Executing manipulation can lead to memory corruption. The attack can only be executed locally. The exploit has been made available to the public and could be exploited.
CVE-2025-54571 Medium 2025-08-06 Not applicable Proof of concept only ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11 and below, an attacker can override the HTTP response’s Content-Type, which could lead to several issues depending on the HTTP scenario. For example, we have demonstrated the potential for XSS and arbitrary script source code disclosure in the latest version of mod_security2. This issue is fixed in version 2.9.12.
CVE-2025-8194 High 2025-07-28 Not applicable No public exploit There is a defect in the CPython “tarfile” module affecting the “TarFile” extraction and entry enumeration APIs. The tar implementation would process tar archives with negative offsets without error, resulting in an infinite loop and deadlock during the parsing of maliciously crafted tar archives. This vulnerability can be mitigated by including the following patch after importing the “tarfile” module:  https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1
CVE-2025-8177 Medium 2025-07-26 Not applicable Proof of concept only A vulnerability was found in LibTIFF up to 4.7.0. It has been rated as critical. This issue affects the function setrow of the file tools/thumbnail.c. The manipulation leads to buffer overflow. An attack has to be approached locally. The patch is named e8c9d6c616b19438695fd829e58ae4fde5bfbc22. It is recommended to apply a patch to fix this issue. This vulnerability only affects products that are no longer supported by the maintainer.
CVE-2025-8176 Low 2025-07-26 Not applicable Proof of concept only A vulnerability was found in LibTIFF up to 4.7.0. It has been declared as critical. This vulnerability affects the function get_histogram of the file tools/tiffmedian.c. The manipulation leads to use after free. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as fe10872e53efba9cc36c66ac4ab3b41a839d5172. It is recommended to apply a patch to fix this issue.
CVE-2025-5449 Medium 2025-07-25 Not applicable No public exploit A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash, resulting in a denial of service.
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-2025-4878 Low 2025-07-22 Not applicable No public exploit A vulnerability was found in libssh, where an uninitialized variable exists under certain conditions in the privatekey_from_file() function. This flaw can be triggered if the file specified by the filename doesn't exist and may lead to possible signing failures or heap corruption.
CVE-2025-27210 High 2025-07-18 Not applicable Working exploit published An incomplete fix has been identified for CVE-2025-23084 in Node.js, specifically affecting Windows device names like CON, PRN, and AUX. This vulnerability affects Windows users of `path.join` API.
CVE-2025-27209 High 2025-07-18 Not applicable No public exploit The V8 release used in Node.js v24.0.0 has changed how string hashes are computed using rapidhash. This implementation re-introduces the HashDoS vulnerability as an attacker who can control the strings to be hashed can generate many hash collisions - an attacker can generate collisions even without knowing the hash-seed. * This vulnerability affects Node.js v24.x users.
CVE-2025-6965 High 2025-07-15 Not applicable Working exploit published There exists a vulnerability in SQLite versions before 3.50.2 where the number of aggregate terms could exceed the number of columns available. This could lead to a memory corruption issue. We recommend upgrading to version 3.50.2 or above.
CVE-2025-53643 Low 2025-07-14 Not applicable No public exploit AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.12.14, the Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request. If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or AIOHTTP_NO_EXTENSIONS is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections. Version 3.12.14 contains a patch for this issue.
CVE-2025-6395 Medium 2025-07-10 Not applicable No public exploit A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().
CVE-2025-32990 High 2025-07-10 Not applicable No public exploit A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility. When it reads certain settings from a template file, it allows an attacker to cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.
CVE-2025-32989 Medium 2025-07-10 Not applicable No public exploit A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a malformed SCT extension (OID 1.3.6.1.4.1.11129.2.4.2) that contains sensitive data. This issue leads to the exposure of confidential information when GnuTLS verifies certificates from certain websites when the certificate (SCT) is not checked correctly.
CVE-2025-32988 High 2025-07-10 Not applicable No public exploit A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the type-id OID is invalid or malformed, GnuTLS will call asn1_delete_structure() on an ASN.1 node it does not own, leading to a double-free condition when the parent function or caller later attempts to free the same structure. This vulnerability can be triggered using only public GnuTLS APIs and may result in denial of service or memory corruption, depending on allocator behavior.
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-2025-5987 High 2025-07-07 Not applicable No public exploit A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.
CVE-2025-5372 High 2025-07-04 Not applicable No public exploit A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenly return a success status even when key derivation fails. This results in uninitialized cryptographic key buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality, integrity, and availability.
CVE-2025-5351 Medium 2025-07-04 Not applicable No public exploit A flaw was found in the key export functionality of libssh. The issue occurs in the internal function responsible for converting cryptographic keys into serialized formats. During error handling, a memory structure is freed but not cleared, leading to a potential double free issue if an additional failure occurs later in the function. This condition may result in heap corruption or application instability in low-memory scenarios, posing a risk to system reliability where key export operations are performed.
CVE-2025-5318 High 2025-06-24 Not applicable No public exploit A flaw was found in the libssh library in versions less than 0.11.2. An out-of-bounds read can be triggered in the sftp_handle function due to an incorrect comparison check that permits the function to access memory beyond the valid handle list and to return an invalid pointer, which is used in further processing. This vulnerability allows an authenticated remote attacker to potentially read unintended memory regions, exposing sensitive information or affect service behavior.
CVE-2025-52967 Medium 2025-06-23 Not applicable No public exploit gateway_proxy_handler in MLflow before 3.1.0 lacks gateway_path validation.
CVE-2025-6069 Medium 2025-06-17 Not applicable No public exploit The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified denial-of-service.
CVE-2025-47436 Medium 2025-05-14 Not applicable No public exploit Heap-based Buffer Overflow vulnerability in Apache ORC. A vulnerability has been identified in the ORC C++ LZO decompression logic, where specially crafted malformed ORC files can cause the decompressor to allocate a 250-byte buffer but then attempts to copy 295 bytes into it. It causes memory corruption. This issue affects Apache ORC C++ library: through 1.8.8, from 1.9.0 through 1.9.5, from 2.0.0 through 2.0.4, from 2.1.0 through 2.1.1. Users are recommended to upgrade to version 1.8.9, 1.9.6, 2.0.5, and 2.1.2, which fix the issue.
CVE-2025-43967 High 2025-04-21 Not applicable No public exploit libheif before 1.19.6 has a NULL pointer dereference in ImageItem_Grid::get_decoder in image-items/grid.cc because a grid image can reference a nonexistent image item.
CVE-2025-43966 High 2025-04-21 Not applicable No public exploit libheif before 1.19.6 has a NULL pointer dereference in ImageItem_iden in image-items/iden.cc.
CVE-2024-56406 High 2025-04-13 Not applicable No public exploit A heap buffer overflow vulnerability was discovered in Perl. Release branches 5.34, 5.36, 5.38 and 5.40 are affected, including development versions from 5.33.1 through 5.41.10. When there are non-ASCII bytes in the left-hand-side of the `tr` operator, `S_do_trans_invmap` can overflow the destination pointer `d`.    $ perl -e '$_ = "\x{FF}" x 1000000; tr/\xFF/\x{100}/;'    Segmentation fault (core dumped) It is believed that this vulnerability can enable Denial of Service and possibly Code Execution attacks on platforms that lack sufficient defenses.
CVE-2025-29482 Medium 2025-04-07 Not applicable Proof of concept only Buffer Overflow vulnerability in libheif 1.19.7 allows a local attacker to execute arbitrary code via the SAO (Sample Adaptive Offset) processing of libde265.
CVE-2025-0453 High 2025-03-20 Not applicable Proof of concept only In mlflow/mlflow version 2.17.2, the `/graphql` endpoint is vulnerable to a denial of service attack. An attacker can create large batches of queries that repeatedly request all runs from a given experiment. This can tie up all the workers allocated by MLFlow, rendering the application unable to respond to other requests. This vulnerability is due to uncontrolled resource consumption.
CVE-2025-22869 High 2025-02-26 Not applicable No public exploit SSH servers which implement file transfer protocols are vulnerable to a denial of service attack from clients which complete the key exchange slowly, or not at all, causing pending content to be read into memory, but never transmitted.
CVE-2025-26791 Medium 2025-02-14 Not applicable Proof of concept only DOMPurify before 3.2.4 has an incorrect template literal regular expression, sometimes leading to mutation cross-site scripting (mXSS).
CVE-2025-0725 High 2025-02-05 Not applicable Proof of concept only When libcurl is asked to perform automatic gzip decompression of content-encoded HTTP responses with the `CURLOPT_ACCEPT_ENCODING` option, **using zlib 1.2.0.3 or older**, an attacker-controlled integer overflow would make libcurl perform a buffer overflow.
CVE-2024-45339 High 2025-01-28 Not applicable No public exploit When logs are written to a widely-writable directory (the default), an unprivileged attacker may predict a privileged process's log file path and pre-create a symbolic link to a sensitive file in its place. When that privileged process runs, it will follow the planted symlink and overwrite that sensitive file. To fix that, glog now causes the program to exit (with status code 2) when it finds that the configured log file already exists.
CVE-2024-6387 High 2024-07-01 Not applicable Exploited A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.
CVE-2024-24790 Critical 2024-06-05 Not applicable No public exploit The various Is methods (IsPrivate, IsLoopback, etc) did not work as expected for IPv4-mapped IPv6 addresses, returning false for addresses which would return true in their traditional IPv4 forms.
CVE-2024-24789 Medium 2024-06-05 Not applicable Proof of concept only The archive/zip package's handling of certain types of invalid zip files differs from the behavior of most zip implementations. This misalignment could be exploited to create an zip file with contents that vary depending on the implementation reading the file. The archive/zip package now rejects files containing these errors.
CVE-2024-37059 High 2024-06-04 Not applicable No public exploit Deserialization of untrusted data can occur in versions of the MLflow platform running version 0.5.0 or newer, enabling a maliciously uploaded PyTorch model to run arbitrary code on an end user’s system when interacted with.
CVE-2023-5388 Medium 2024-03-19 Not applicable No public exploit NSS was susceptible to a timing side-channel attack when performing RSA decryption. This attack could potentially allow an attacker to recover the private data. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.
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