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CVE-2026-34486: Apache Tomcat Missing Encryption of Sensitive Data vulnerability

April 9, 2026 (updated June 8, 2026)

Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor.

This issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116.

Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.

References

  • github.com/advisories/GHSA-69r9-qgr7-g2wj
  • github.com/apache/tomcat/commit/1fab40ccc752e22639eccfe290d5624afad7eccd
  • github.com/apache/tomcat/commit/55f3eb9148233054fccfdf761141c6894a050be1
  • github.com/apache/tomcat/commit/776e12b3e2b0b4507b8a3b62c187ceb0b74bf418
  • lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly
  • nvd.nist.gov/vuln/detail/CVE-2026-34486
  • tomcat.apache.org/security-10.html
  • tomcat.apache.org/security-11.html
  • tomcat.apache.org/security-9.html
  • www.herodevs.com/vulnerability-directory/cve-2026-34486
  • www.vicarius.io/vsociety/posts/cve-2026-34486-detection-script-rce-on-apache-tomcat
  • www.vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcat

Code Behaviors & Features

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Affected versions

All versions starting from 9.0.116 before 9.0.117, all versions starting from 10.1.53 before 10.1.54, all versions starting from 11.0.20 before 11.0.21

Fixed versions

  • 9.0.117
  • 10.1.54
  • 11.0.21

Solution

Upgrade to versions 9.0.117, 10.1.54, 11.0.21 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Learn more about CVSS

Weakness

  • CWE-311: Missing Encryption of Sensitive Data

Source file

maven/org.apache.tomcat/tomcat/CVE-2026-34486.yml

Spotted a mistake? Edit the file on GitLab.

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