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Advisory record · GHSA-69r9-qgr7-g2wj

Apache Tomcat Missing Encryption of Sensitive Data vulnerability

CVSS 7.5 HighCriticalIn CISA KEVEPSS 0.99 · 99th percentile

Critical, because:

  • In CISA’s KEV catalogue since 4 Aug 2026: it is known to be exploited.
  • CVSS score 7.5 (7.0 or more) and EPSS 0.99 (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 9 Apr 2026, 21:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.apache.tomcat:tomcat-tribesMaven>=11.0.20, <11.0.21 || >=10.1.53, <10.1.54 || >=9.0.116, <9.0.11711.0.21, 10.1.54, 9.0.117
org.apache.tomcat:tomcatMaven>=11.0.20, <11.0.21 || >=10.1.53, <10.1.54 || >=9.0.116, <9.0.11711.0.21, 10.1.54, 9.0.117
Identifiers
GHSA-69r9-qgr7-g2wj · BIT-tomcat-2026-34486 · CVE-2026-34486
Weakness (CWE)
CWE-311 · CWE-807
Tags
Published
9 Apr 2026
Updated
10 Sept 2026

Machine-written summary

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

Apache Tomcat versions 11.0.20, 10.1.53 and 9.0.116 are affected, including the tomcat and tomcat-tribes packages. A fix for CVE-2026-29146 allowed bypass of the EncryptInterceptor, so sensitive data may not be encrypted as intended, and the source gives few details on what access an attacker needs. Upgrade to 11.0.21, 10.1.54 or 9.0.117.

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
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 Listed since 4 Aug 2026: known to be exploited.
  • EPSS 0.99, the 99th percentile, on 7 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.