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Advisory record · GHSA-83qj-6fr2-vhqg

Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT

CVSS 9.8 CriticalCriticalIn CISA KEVEPSS 1.00 · 99th percentile

Critical, because:

  • In CISA’s KEV catalogue since 1 Apr 2025: it is known to be exploited.
  • CVSS score 9.8: 9.0 or more.
  • CVSS score 9.8 (7.0 or more) and EPSS 1.00 (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 10 Mar 2025, 18:31 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, <11.0.3 || >=10.1.0-M1, <10.1.35 || >=9.0.0.M1, <9.0.99 || >=8.5.0, <=8.5.10011.0.3, 10.1.35, 9.0.99
org.apache.tomcat.embed:tomcat-embed-coreMaven>=11.0.0-M1, <11.0.3 || >=10.1.0-M1, <10.1.35 || >=9.0.0.M1, <9.0.99 || >=8.5.0, <=8.5.10011.0.3, 10.1.35, 9.0.99
Identifiers
GHSA-83qj-6fr2-vhqg · BIT-tomcat-2025-24813 · CVE-2025-24813
Weakness (CWE)
CWE-44 · CWE-502
Tags
Published
10 Mar 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 11.0.0-M1 through 11.0.2, 10.1.0-M1 through 10.1.34, and 9.0.0.M1 through 9.0.98 are affected, as are 8.5.0 through 8.5.100 (EOL). An attacker who can reach a Tomcat instance with write enabled on the default servlet (disabled by default) and partial PUT support (enabled by default) can exploit a path equivalence flaw involving file names with internal dots. Depending on the setup, this may allow viewing or altering security-sensitive files, or remote code execution through file-based session persistence. Upgrade to 11.0.3, 10.1.35, or 9.0.99.

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
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H GitHub Advisory Database
  • CISA KEV Listed since 1 Apr 2025: known to be exploited.
  • EPSS 1.00, the 99th percentile, on 14 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.