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Vulnerabilities

Vulnerability · CVE-2025-31650

Improper Input Validation vulnerability in Apache Tomcat.

Published Apr 28, 2025 · catalog updated Nov 3, 2025 · Apache Software Foundation Apache Tomcat

Check this week

CVE-2025-31650 is not in CISA KEV. FIRST estimates a 61.32% chance of exploitation in the next 30 days. Check whether you run Apache Software Foundation Apache Tomcat.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
61.32%
Remediation
Vendor / distro source
Affected products
vendor Apache Software Foundation Apache Tomcat 11.0.0-M2 ≤11.0.5

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 9.0.10

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Apache Software Foundation Apache Tomcat 11.0.0-M2 ≤11.0.511.0.0-M2 ≤11.0.5

How to fix CVE-2025-31650

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-31650 is not in CISA KEV. FIRST estimates a 61.32% chance of exploitation in the next 30 days. Check whether you run Apache Software Foundation Apache Tomcat.

Which versions are affected?

Compare what you have installed with Apache Software Foundation Apache Tomcat 11.0.0-M2 ≤11.0.5 11.0.0-M2 ≤11.0.5. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 61.32%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 28, 2025 · EUVD

    Detected

    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

  2. Nov 3, 2025 · EUVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2025-31650

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-31650

    30-day exploitation probability 61.3%

    first.org
  • EUVDVulnerability recordEUVD-2025-13627

    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 resul

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.