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Advisory record · GHSA-5j33-cvvr-w245

Apache Tomcat Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability

CVSS 9.8 CriticalCriticalEPSS 0.32 · 98th percentile

Critical, because:

  • CVSS score 9.8: 9.0 or more.
  • CVSS score 9.8 (7.0 or more) and EPSS 0.32 (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 17 Dec 2024, 15:31 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, <11.0.2 || >=10.1.0-M1, <10.1.34 || >=9.0.0.M1, <9.0.98 || >=8.5.0, <=8.5.10011.0.2, 10.1.34, 9.0.98
org.apache.tomcat.embed:tomcat-embed-coreMaven>=11.0.0-M1, <11.0.2 || >=10.1.0-M1, <10.1.34 || >=9.0.0.M1, <9.0.98 || >=8.5.0, <=8.5.10011.0.2, 10.1.34, 9.0.98
Identifiers
GHSA-5j33-cvvr-w245 · BIT-tomcat-2024-50379 · CVE-2024-50379
Weakness (CWE)
CWE-367
Tags
Published
17 Dec 2024
Updated
10 Sept 2026

Machine-written summary

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

Apache Tomcat (tomcat-catalina and tomcat-embed-core) versions 11.0.0-M1 through 11.0.1, 10.1.0-M1 through 10.1.33, 9.0.0.M1 through 9.0.97, and 8.5.0 through 8.5.100 are affected. The flaw is a race condition during JSP compilation on case-insensitive file systems, and it can lead to remote code execution when the default servlet is enabled for write, a non-default configuration. Upgrade to 11.0.2, 10.1.34, or 9.0.98, 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
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.32, the 98th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 17 Dec 2024, 12:34 UTC Confirmed by the CVE List
  2. 17 Dec 2024, 13:15 UTC Confirmed by NVD
  3. 31 Oct 2026, 14:17 UTC First seen by agentprime
  4. 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.