CVE-2025-31650 - CVE House
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Status published Unknown CVE-2025-31650

Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Apache Software Foundation

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Affected Software

Apache Tomcat
Vulnerable Versions:
9.0.76, 10.1.10, 11.0.0-M2, 8.5.90

Timeline

Official Publish: April 28th, 2025
Last Modified: November 3rd, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

CWE-459

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.