CVE-2026-101296 Apache Tomcat - JNDIRealm bind credential validation
fails open for non-GSSAPI SASL mechanisms
Severity: Important
Vendor: The Apache Software Foundation
Versions Affected:
Apache Tomcat 11.0.0-M1 to 11.0.26
Apache Tomcat 10.1.0-M1 to 10.1.60
Apache Tomcat 9.0.0.M1 to 9.0.122
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.
Mitigation:
Users of the affected versions should apply one of the following
mitigations:
- Upgrade to Apache Tomcat 11.0.27
- Upgrade to Apache Tomcat 10.1.61
- Upgrade to Apache Tomcat 9.0.123
Credit:
This issue was identified by:
- ai Sreewathsa Kovalluri, Shon Babu, and Kannan K of Innspark Solutions
Private Limited
History:
2026-10-20 Original advisory
References:
[1] https://tomcat.apache.org/security-11.html
[2] https://tomcat.apache.org/security-10.html
[3] https://tomcat.apache.org/security-9.html
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