Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-gcx9-497g-6cp6

Apache Tomcat has an Improper Access Control, Incorrect Authorization vulnerability

CVSS 9.1 CriticalCriticalEPSS 0.0065 · 51st percentile

Critical, because:

  • CVSS score 9.1: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 26 Aug 2026, 00:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.apache.tomcat:tomcatMaven>=11.0.0-M1, <11.0.25 || >=10.1.0-M1, <10.1.58 || >=9.0.0-M1, <9.0.121 || >=8.5.0, <=8.5.100 || >=7.0.0, <=7.0.10911.0.25, 10.1.58, 9.0.121
org.apache.tomcat:tomcat-catalinaMaven>=11.0.0-M1, <11.0.25 || >=10.1.0-M1, <10.1.58 || >=9.0.0-M1, <9.0.121 || >=8.5.0, <=8.5.100 || >=7.0.0, <=7.0.10911.0.25, 10.1.58, 9.0.121
org.apache.tomcat.embed:tomcat-embed-coreMaven>=11.0.0-M1, <11.0.25 || >=10.1.0-M1, <10.1.58 || >=9.0.0-M1, <9.0.121 || >=8.5.0, <=8.5.100 || >=7.0.0, <=7.0.10911.0.25, 10.1.58, 9.0.121
Identifiers
GHSA-gcx9-497g-6cp6 · BIT-tomcat-2026-65182 · CVE-2026-65182
Weakness (CWE)
CWE-284 · CWE-863
Tags
Published
26 Aug 2026
Updated
11 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 11.0.24, 10.1.0-M1 through 10.1.57, 9.0.0.M1 through 9.0.120, 8.5.0 through 8.5.100, and 7.0.0 through 7.0.109 are affected, along with the tomcat, tomcat-catalina and tomcat-embed-core Maven packages. When a constraint on a longer path is configured before a more restrictive constraint on a shorter sub-path, the source says the security constraint can be bypassed. The source does not describe the attacker's required access level. Upgrade to 11.0.25, 10.1.58, or 9.0.121, which fix the issue; no fix is listed for 8.5.x or 7.0.x.

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
9.1 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0065, the 51st percentile, on 6 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.