CVE-2025-31650: tomcat — Fix

Description

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-459 CWE-459

Affected Products

Vendor	Product	Versions
apache	tomcat	9.0.76 — 9.0.104
apache	tomcat	10.1.10 — 10.1.40
apache	tomcat	11.0.1 — 11.0.6
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All
apache	tomcat	All

References

Advisories & Patches

https://lists.apache.org/thread/j6zzk0y3yym9pzfzkq5vcyxzz0yzh826

Other References

http://www.openwall.com/lists/oss-security/2025/04/28/2 https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-31650? +

CVE-2025-31650 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-31650? +

CVE-2025-31650 affects products from apache, specifically: tomcat. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-31650? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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