CVE-2025-31650

Improper Input Validation vulnerability in Apache Tomcat. Incorrect error handling for some invalid HTTP priority headers resulted in incomplete clean-up of the failed request which created a memory leak. A large number of such requests could trigger an OutOfMemoryException resulting in a denial of service.

This issue affects Apache Tomcat: from 9.0.76 through 9.0.102, from 10.1.10 through 10.1.39, from 11.0.0-M2 through 11.0.5. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.90 though 8.5.100.

Users are recommended to upgrade to version 9.0.104, 10.1.40 or 11.0.6 which fix the issue.

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process.

Security Fix(es):

Improper Input Validation vulnerability in Apache Tomcat. Incorrect error handling for some invalid HTTP priority headers resulted in incomplete clean-up of the failed request which created a memory leak. A large number of such requests could trigger an OutOfMemoryException resulting in a denial of service.

This issue affects Apache Tomcat: from 9.0.76 through 9.0.102, from 10.1.10 through 10.1.39, from 11.0.0-M2 through 11.0.5.

Users are recommended to upgrade to version 9.0.104, 10.1.40 or 11.0.6 which fix the issue.(CVE-2025-31650)

Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache Tomcat. For a subset of unlikely rewrite rule configurations, it was possible for a specially crafted request to bypass some rewrite rules. If those rewrite rules effectively enforced security constraints, those constraints could be bypassed.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.5, from 10.1.0-M1 through 10.1.39, from 9.0.0.M1 through 9.0.102.

Users are recommended to upgrade to version [FIXED_VERSION], which fixes the issue.(CVE-2025-31651)

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Tomcat is developed in an open and participatory environment and released under the Apache Software License version 2.0. Tomcat is intended to be a collaboration of the best-of-breed developers from around the world.

Security Fix(es):

• tomcat: Incomplete fix for CVE-2024-50379 - RCE due to TOCTOU issue in JSP compilation (CVE-2024-56337)

• tomcat: Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame (CVE-2025-31650)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: Incomplete fix for CVE-2024-50379 - RCE due to TOCTOU issue in JSP compilation (CVE-2024-56337)

• tomcat: Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame (CVE-2025-31650)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: Incomplete fix for CVE-2024-50379 - RCE due to TOCTOU issue in JSP compilation (CVE-2024-56337)

• tomcat: Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame (CVE-2025-31650)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Root has patched CVE-2025-31650 in the org.apache.tomcat.embed:tomcat-embed-core package for Root:Maven. Multiple fixed versions available.

Improper Input Validation vulnerability in Apache Tomcat. Incorrect error handling for some invalid HTTP priority headers resulted in incomplete clean-up of the failed request which created a memory leak. A large number of such requests could trigger an OutOfMemoryException resulting in a denial of service. This issue affects Apache Tomcat: from 9.0.76 through 9.0.102, from 10.1.10 through 10.1.39, from 11.0.0-M2 through 11.0.5. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.90 though 8.5.100. Users are recommended to upgrade to version 9.0.104, 10.1.40 or 11.0.6 which fix the issue.

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Tomcat is developed in an open and participatory environment and released under the Apache Software License version 2.0. Tomcat is intended to be a collaboration of the best-of-breed developers from around the world.

Security Fix(es):

• tomcat: Incomplete fix for CVE-2024-50379 - RCE due to TOCTOU issue in JSP compilation (CVE-2024-56337)
• tomcat: Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame (CVE-2025-31650)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: Incomplete fix for CVE-2024-50379 - RCE due to TOCTOU issue in JSP compilation (CVE-2024-56337)
• tomcat: Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame (CVE-2025-31650)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: Incomplete fix for CVE-2024-50379 - RCE due to TOCTOU issue in JSP compilation (CVE-2024-56337)
• tomcat: Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame (CVE-2025-31650)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Improper Input Validation vulnerability in Apache Tomcat. Incorrect error handling for some invalid HTTP priority headers resulted in incomplete clean-up of the failed request which created a memory leak. A large number of such requests could trigger an OutOfMemoryException resulting in a denial of service.

This issue affects Apache Tomcat: from 9.0.76 through 9.0.102, from 10.1.10 through 10.1.39, from 11.0.0 through 11.0.5. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.90 though 8.5.100.

Users are recommended to upgrade to version 9.0.104, 10.1.40 or 11.0.6 which fix the issue.

TuxCare rebuilt 3 packages to address 10 CVEs. Fixed in 8.5.100.tuxcare.1.

TuxCare rebuilt 6 packages to address 18 CVEs. Fixed in 9.0.83-tuxcare.1.

TuxCare rebuilt 4 packages to address 10 CVEs. Fixed in 9.0.90-tuxcare.1.

TuxCare rebuilt 4 packages to address 15 CVEs. Fixed in 9.0.87-tuxcare.1.

TuxCare rebuilt 4 packages to address 12 CVEs. Fixed in 9.0.100-tuxcare.1.

TuxCare rebuilt 6 packages to address 22 CVEs. Fixed in 10.1.18-tuxcare.1.

TuxCare rebuilt 5 packages to address 8 CVEs. Fixed in 10.1.33-tuxcare.3.

DoS via malformed HTTP/2 PRIORITY_UPDATE frame. (CVE-2025-31650) Bypass of rules in Rewrite Valve. (CVE-2025-31651)

These are all security issues fixed in the tomcat-9.0.104-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the tomcat10-10.1.40-1.1 package on the GA media of openSUSE Tumbleweed.

This update for tomcat fixes the following issues:

Update to Tomcat 9.0.104

• CVE-2025-31650: invalid priority field values should be ignored (bsc#1242008)
• CVE-2025-31651: Better handling of URLs with literal ';' and '?' (bsc#1242009)

Full changelog:

https://tomcat.apache.org/tomcat-9.0-doc/changelog.htm

This update for tomcat10 fixes the following issues:

Update to Tomcat 10.1.40

• CVE-2025-31650: invalid priority field values should be ignored (bsc#1242008)
• CVE-2025-31651: Better handling of URLs with literal ';' and '?' (bsc#1242009)

Full changelog:

https://tomcat.apache.org/tomcat-10.1-doc/changelog.html

This update for tomcat fixes the following issues:

Update to Tomcat 9.0.104

• CVE-2025-31650: invalid priority field values should be ignored (bsc#1242008)
• CVE-2025-31651: Better handling of URLs with literal ';' and '?' (bsc#1242009)

Full changelog:

https://tomcat.apache.org/tomcat-9.0-doc/changelog.htm

This update for tomcat10 fixes the following issues:

Update to Tomcat 10.1.40

• CVE-2025-31650: invalid priority field values should be ignored (bsc#1242008)
• CVE-2025-31651: Better handling of URLs with literal ';' and '?' (bsc#1242009)

Full changelog:

https://tomcat.apache.org/tomcat-10.1-doc/changelog.html

It was discovered that Tomcat did not correctly handle case sensitivity. An attacker could possibly use this issue to bypass authentication mechanisms. (CVE-2025-46701)

Elysee Franchuk discovered that Tomcat did not correctly limit the number of attributes for a session. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04 LTS. (CVE-2024-54677)

It was discovered that Tomcat did not correctly sanitize certain URLs. An attacker could possibly use this issue to bypass authentication mechanisms. (CVE-2025-31651)

It was discovered that Tomcat did not correctly handle certain malformed HTTP headers, which could lead to a memory leak. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04 LTS. (CVE-2025-31650)

It was discovered that Tomcat did not correctly handle concurrent operations under certain circumstances. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 24.04 LTS. (CVE-2024-50379)

It was discovered that Tomcat did not correctly handle certain authentication errors. An attacker could possibly use this issue to bypass authentication mechanisms. This issue only affected Ubuntu 24.04 LTS. (CVE-2024-52316)