Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-5mp6-jrq3-r938

Apache Tomcat: LockOutRealm treats user names as case-sensitive

CVSS 7.5 HighEPSS 0.0050 · 43rd percentile

Published by the GitHub Advisory Database at 12 May 2026, 18:30 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<9.0.118 || >=10.1.0-M1, <10.1.55 || >=11.0.0-M1, <11.0.229.0.118, 10.1.55, 11.0.22
org.apache.tomcat:tomcatMaven<9.0.118 || >=10.1.0-M1, <10.1.55 || >=11.0.0-M1, <11.0.229.0.118, 10.1.55, 11.0.22
org.apache.tomcat:tomcat-catalinaMaven<9.0.118 || >=10.1.0-M1, <10.1.55 || >=11.0.0-M1, <11.0.229.0.118, 10.1.55, 11.0.22
Identifiers
GHSA-5mp6-jrq3-r938 · BIT-tomcat-2026-43513 · CVE-2026-43513
Weakness (CWE)
CWE-178
Tags
Published
12 May 2026
Updated
11 Sept 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:H/I:N/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0050, the 43rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:16 UTC First seen by agentprime
  2. 31 Oct 2026, 14:16 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.