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Advisory record · GHSA-5v3h-fjv2-54fg

Apache Tomcat has an Improper Authorization vulnerability

CVSS 6.5 MediumEPSS 0.0069 · 53rd percentile

Published by the GitHub Advisory Database at 29 Jun 2026, 21:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.apache.tomcat.embed:tomcat-embed-coreMaven>=11.0.0-M1, <11.0.23 || >=10.1.0-M1, <10.1.56 || >=9.0.0.M1, <9.0.119 || >=8.5.0, <=8.5.100 || <=7.0.10911.0.23, 10.1.56, 9.0.119
org.apache.tomcat:tomcatMaven>=11.0.0-M1, <11.0.23 || >=10.1.0-M1, <10.1.56 || >=9.0.0.M1, <9.0.119 || >=8.5.0, <=8.5.100 || <=7.0.10911.0.23, 10.1.56, 9.0.119
org.apache.tomcat:tomcat-catalinaMaven>=11.0.0-M1, <11.0.23 || >=10.1.0-M1, <10.1.56 || >=9.0.0.M1, <9.0.119 || >=8.5.0, <=8.5.100 || <=7.0.10911.0.23, 10.1.56, 9.0.119
Identifiers
GHSA-5v3h-fjv2-54fg · BIT-tomcat-2026-55956 · CVE-2026-55956
Weakness (CWE)
CWE-285
Tags
Published
29 Jun 2026
Updated
4 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
6.5 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0069, the 53rd percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 29 Jun 2026, 21:32 UTC Confirmed by GitHub Advisory Database
  2. 4 Nov 2026, 16:30 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.