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[ CVE-2026-101296 · Published 20 Oct 2026 ]

Vulnerability in Apache Software Foundation Apache Tomcat

CVSS 9.1 EPSS <1%2 agency advisoriesFix available

[ Why it matters ]Priority signals

  • Critical severity: CVSS 9.1

[ Description ]Official description

A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism allowed attackers to authenticate without providing the correct password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

[ Fixes ]Fixes and patches

[ Advisories ]Government CERT advisories

  • CERT-FRCERTFR-2026-AVI-1358

    Multiple vulnerabilities in Apache Tomcat Translated from French

    Multiple vulnerabilities have been discovered in Apache Tomcat. Some of them allow an attacker to cause a breach of data confidentiality, a security policy bypass and a security problem not specified by the vendor.

    CVE-2026-65183CVE-2026-88041CVE-2026-80353+6 more CVEs
  • BSI CERT-BundWID-SEC-2026-4066

    Apache Tomcat: Multiple vulnerabilities Translated from German

    CVE-2026-101356CVE-2026-88041CVE-2026-80353+5 more CVEs

[ References ]References