CVE-2026-55957
Apache Tomcat: Authentication bypass with JNDIRealm and GSSAPI authenticated bind
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.
INFO
Published Date :
June 29, 2026, 8:47 p.m.
Last Modified :
June 29, 2026, 8:47 p.m.
Remotely Exploit :
No
Source :
apache
Solution
- Upgrade Apache Tomcat to version 11.0.5 or later.
- Upgrade Apache Tomcat to version 10.1.37 or later.
- Upgrade Apache Tomcat to version 9.0.101 or later.
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