CVE-2026-55957

Apache Tomcat: Authentication bypass with JNDIRealm and GSSAPI authenticated bind

Published Jun 29, 2026 CVSS 3.1 · 7.3 High EPSS 2.9% KEV · Not listed
Description
Missing Critical Step in Authentication vulnerability in Apache Tomcat when the JNDIRealm was configured to authenticate binds using GSSAPI allowed attackers to authenticate without provided the correct password.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.4, from 10.1.0-M1 through 10.1.36, from 9.0.0.M1 through 9.0.100, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.

Users are recommended to upgrade to version 11.0.5, 10.1.37 or 9.0.101, which fixes the issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Github GHSA Github GHSA GHSA-7895-gffq-w6jq Apache Tomcat has a Missing Critical Step in Authentication vulnerability
History
Type Values Removed Values Added
First Time appeared Apache
Apache tomcat
Apache Tomcat
Apache Tomcat apache Tomcat
Vendors & Products Apache
Apache tomcat
Apache Tomcat
Apache Tomcat apache Tomcat
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Missing Critical Step in Authentication vulnerability in Apache Tomcat when the JNDIRealm was configured to authenticate binds using GSSAPI allowed attackers to authenticate without provided the correct password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.4, from 10.1.0-M1 through 10.1.36, from 9.0.0.M1 through 9.0.100, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Users are recommended to upgrade to version 11.0.5, 10.1.37 or 9.0.101, which fixes the issue.
Title Apache Tomcat: Authentication bypass with JNDIRealm and GSSAPI authenticated bind
Weaknesses CWE-304
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Jun 30, 2026, 1:27 PM
Reserved
Jun 17, 2026, 7:25 PM
Status
Analyzed
Published
Jun 29, 2026, 9:16 PM
Modified
Oct 25, 2026, 9:10 PM