CVE-2025-31650 Information

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.

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

Reference

http://www.openwall.com/lists/oss-security/2025/04/28/2 https://lists.apache.org/thread/j6zzk0y3yym9pzfzkq5vcyxzz0yzh826