What is the CVSS score of CVE-2025-31650?

CVE-2025-31650 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 20.3%.

Which versions of Tomcat are affected by CVE-2025-31650?

CVE-2025-31650 presents notable security risk rated CVSS 7.5. Exploitation could compromise the security of affected deployments.. A patch is available.

Is there a public PoC exploit available for CVE-2025-31650?

Yes, a public proof-of-concept exploit is available for CVE-2025-31650. Prioritise patching immediately. EPSS: 20.3%.

How to fix or mitigate CVE-2025-31650?

Within 24 hours: Identify all affected systems running Apache Tomcat. Incorrect error handling for some invalid HTT and apply vendor patches immediately. Monitor vendor channels for patch availability.

Tomcat CVE-2025-31650

HIGH

Incomplete Cleanup (CWE-459)

2025-04-28 security@apache.org

Denial Of Service Apache Red Hat Tomcat Suse

7.5

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 18:39 vuln.today

PoC Detected

Nov 03, 2025 - 20:18 vuln.today

Public exploit code

CVE Published

Apr 28, 2025 - 20:15 nvd

HIGH 7.5

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

249 maven packages depend on org.apache.tomcat.embed:tomcat-embed-core (12 direct, 237 indirect)
9 maven packages depend on org.apache.tomcat:tomcat-coyote (7 direct, 2 indirect)

Ecosystem-wide dependent count for version 9.0.76 and other introduced versions.

DescriptionNVD

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.

AnalysisAI

Improper Input Validation vulnerability in Apache Tomcat. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 20.3%.

Technical ContextAI

This vulnerability is classified under CWE-459. 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.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. Affected products include: Apache Tomcat. Version information: through 9.0.102.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.