Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Tomcat | >= 9.0.76, < 9.0.104 |
Related Weaknesses (CWE)
References
- https://lists.apache.org/thread/j6zzk0y3yym9pzfzkq5vcyxzz0yzh826Mailing ListVendor Advisory
- http://www.openwall.com/lists/oss-security/2025/04/28/2Mailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html
FAQ
What is CVE-2025-31650?
CVE-2025-31650 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 l...
How severe is CVE-2025-31650?
CVE-2025-31650 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-31650?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Tomcat.