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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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Overview 10 matches · 1 protected · 0 exploited · 0 CISA KEV · 0 public PoC · 0 EPSS ≥ 0.5
10matches 1protected10.0% 0exploited0.0% 0CISA KEV0.0% 0public PoC0.0% 0EPSS ≥ 0.50.0%
Protected by Waratek 1 10.0% Rule in development 0 0.0% Mitigation candidate 0 0.0% No exploit published 9 90.0%
Critical 0 0.0% High 0 0.0% Medium 10 100.0% Low 0 0.0% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 1 10.0% partly blocked 0 0.0% not blocked 9 90.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 0 0.0% Working exploit published 0 0.0% Proof of concept only 10 100.0% Forecast only 0 0.0% No public exploit 0 0.0%
split by peak 3 / quarter
No exploit published: 9Protected by Waratek: 1 Medium: 10 not blocked: 9blocked by ARMR today: 1 Proof of concept only: 10
Q4 231 No exploit published1 Medium1 not blocked1 Proof of concept only1 Q1 241 No exploit published1 Medium1 not blocked1 Proof of concept only1 Q2 240 Q3 240 Q4 241 No exploit published1 Medium1 not blocked1 Proof of concept only1 Q1 251 No exploit published1 Medium1 not blocked1 Proof of concept only1 Q2 251 No exploit published1 Medium1 not blocked1 Proof of concept only1 Q3 252 No exploit published2 Medium2 not blocked2 Proof of concept only2 Q4 253 Protected by Waratek1 No exploit published2 Medium3 blocked by ARMR today1 not blocked2 Proof of concept only3
Q4 23Q1 24Q2 24Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25
10 matches Sign in to download these CVEs as CSV or JSON, or to follow them in a feed.
CVE Severity Published▾ Status Exploitation Description
CVE-2025-67735 Medium 2025-12-16 No exploit published Proof of concept only Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.129.Final and 4.2.8.Final, the `io.netty.handler.codec.http.HttpRequestEncoder` has a CRLF injection with the request URI when constructing a request. This leads to request smuggling when `HttpRequestEncoder` is used without proper sanitization of the URI. Any application / framework using `HttpRequestEncoder` can be subject to be abused to perform request smuggling using CRLF injection. Versions 4.1.129.Final and 4.2.8.Final fix the issue.
CVE-2024-31573 Medium 2025-10-17 No exploit published Proof of concept only XMLUnit for Java before 2.10.0, in the default configuration, might allow code execution via an untrusted stylesheet (used for an XSLT transformation), because XSLT extension functions are enabled.
CVE-2025-59419 Medium 2025-10-15 Protected by Waratek Proof of concept only Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.128.Final and 4.2.7.Final, the SMTP codec in Netty contains an SMTP command injection vulnerability due to insufficient input validation for Carriage Return (\r) and Line Feed (\n) characters in user-supplied parameters. The vulnerability exists in io.netty.handler.codec.smtp.DefaultSmtpRequest, where parameters are directly concatenated into the SMTP command string without sanitization. When methods such as SmtpRequests.rcpt(recipient) are called with a malicious string containing CRLF sequences, attackers can inject arbitrary SMTP commands. Because the injected commands are sent from the server's trusted IP address, resulting emails will likely pass SPF and DKIM authentication checks, making them appear legitimate. This allows remote attackers who can control SMTP command parameters (such as email recipients) to forge arbitrary emails from the trusted server, potentially impersonating executives and forging high-stakes corporate communications. This issue has been patched in versions 4.1.129.Final and 4.2.8.Final. No known workarounds exist.
CVE-2025-58057 Medium 2025-09-04 No exploit published Proof of concept only Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In netty-codec-compression versions 4.1.124.Final and below, and netty-codec versions 4.2.4.Final and below, when supplied with specially crafted input, BrotliDecoder and certain other decompression decoders will allocate a large number of reachable byte buffers, which can lead to denial of service. BrotliDecoder.decompress has no limit in how often it calls pull, decompressing data 64K bytes at a time. The buffers are saved in the output list, and remain reachable until OOM is hit. This is fixed in versions 4.1.125.Final of netty-codec and 4.2.5.Final of netty-codec-compression.
CVE-2025-53864 Medium 2025-07-11 No exploit published Proof of concept only Connect2id Nimbus JOSE + JWT 10.0.x before 10.0.2 and 9.37.x before 9.37.4 allows a remote attacker to cause a denial of service via a deeply nested JSON object supplied in a JWT claim set, because of uncontrolled recursion. NOTE: this is independent of the Gson 2.11.0 issue because the Connect2id product could have checked the JSON object nesting depth, regardless of what limits (if any) were imposed by Gson.
CVE-2025-35036 Medium 2025-06-03 No exploit published Proof of concept only Hibernate Validator before 6.2.0 and 7.0.0, by default and depending how it is used, may interpolate user-supplied input in a constraint violation message with Expression Language. This could allow an attacker to access sensitive information or execute arbitrary Java code. Hibernate Validator as of 6.2.0 and 7.0.0 no longer interpolates custom constraint violation messages with Expression Language and strongly recommends not allowing user-supplied input in constraint violation messages. CVE-2020-5245 and CVE-2025-4428 are examples of related, downstream vulnerabilities involving Expression Language intepolation of user-supplied data.
CVE-2025-25193 Medium 2025-02-10 No exploit published Proof of concept only Netty, an asynchronous, event-driven network application framework, has a vulnerability in versions up to and including 4.1.118.Final. An unsafe reading of environment file could potentially cause a denial of service in Netty. When loaded on an Windows application, Netty attempts to load a file that does not exist. If an attacker creates such a large file, the Netty application crash. A similar issue was previously reported as CVE-2024-47535. This issue was fixed, but the fix was incomplete in that null-bytes were not counted against the input limit. Commit d1fbda62d3a47835d3fb35db8bd42ecc205a5386 contains an updated fix.
CVE-2024-47535 Medium 2024-11-12 No exploit published Proof of concept only Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. An unsafe reading of environment file could potentially cause a denial of service in Netty. When loaded on an Windows application, Netty attempts to load a file that does not exist. If an attacker creates such a large file, the Netty application crashes. This vulnerability is fixed in 4.1.115.
CVE-2023-51775 Medium 2024-02-29 No exploit published Proof of concept only The jose4j component before 0.9.4 for Java allows attackers to cause a denial of service (CPU consumption) via a large p2c (aka PBES2 Count) value.
CVE-2023-46750 Medium 2023-12-14 No exploit published Proof of concept only URL Redirection to Untrusted Site ('Open Redirect') vulnerability when "form" authentication is used in Apache Shiro. Mitigation: Update to Apache Shiro 1.13.0+ or 2.0.0-alpha-4+.