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Advisory record · GHSA-h3gc-qfqq-6h8f

Apache Tomcat - DoS in multipart upload

CVSS 7.5 HighCriticalEPSS 0.31 · 98th percentile

Critical, because:

  • CVSS score 7.5 (7.0 or more) and EPSS 0.31 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical

Published by the GitHub Advisory Database at 16 Jun 2025, 15:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.apache.tomcat:tomcat-catalinaMaven>=11.0.0-M1, <11.0.8 || >=10.1.0-M1, <10.1.42 || >=9.0.0.M1, <9.0.106 || >=8.5.0, <=8.5.10011.0.8, 10.1.42, 9.0.106
org.apache.tomcat.embed:tomcat-embed-coreMaven>=11.0.0-M1, <11.0.8 || >=10.1.0-M1, <10.1.42 || >=9.0.0.M1, <9.0.106 || >=8.5.0, <=8.5.10011.0.8, 10.1.42, 9.0.106
Identifiers
GHSA-h3gc-qfqq-6h8f · BIT-tomcat-2025-48988 · CVE-2025-48988
Weakness (CWE)
CWE-770
Tags
Published
16 Jun 2025
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Apache Tomcat versions 8.5.0 through 8.5.100, 9.0.0.M1 through 9.0.105, 10.1.0-M1 through 10.1.41, and 11.0.0-M1 through 11.0.7 are affected, along with the tomcat-catalina and tomcat-embed-core Maven packages. The source gives few details on the attack conditions, but the issue is a resource allocation flaw in multipart upload handling that can lead to denial of service. Upgrade to Tomcat 11.0.8, 10.1.42, or 9.0.106, which fix the issue.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.31, the 98th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:17 UTC First seen by agentprime
  2. 31 Oct 2026, 14:17 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.