CVE-2026-55957: CWE-304 Missing Critical Step in Authentication in Apache Software Foundation Apache Tomcat
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.
AI Analysis
Technical Summary
CVE-2026-55957 is a missing critical step in the authentication process within Apache Tomcat when configured with JNDIRealm to authenticate binds using GSSAPI. This flaw permits attackers to authenticate without providing the correct password. The vulnerability affects Apache Tomcat versions from 7.0.0 through 7.0.109, 8.5.0 through 8.5.100, 9.0.0.M1 through 9.0.100, 10.1.0-M1 through 10.1.36, and 11.0.0-M1 through 11.0.4. The vendor has addressed this issue in versions 11.0.5, 10.1.37, and 9.0.101.
Potential Impact
Attackers can bypass password authentication when Apache Tomcat is configured to use JNDIRealm with GSSAPI, potentially allowing unauthorized access to the system. This undermines the authentication mechanism's integrity, leading to possible unauthorized system access.
Mitigation Recommendations
Users should upgrade Apache Tomcat to version 11.0.5, 10.1.37, or 9.0.101 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is provided in the available data.
CVE-2026-55957: CWE-304 Missing Critical Step in Authentication in Apache Software Foundation Apache Tomcat
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.
Affected software
pkg:maven/org.apache.tomcat/tomcatRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-55957 is a missing critical step in the authentication process within Apache Tomcat when configured with JNDIRealm to authenticate binds using GSSAPI. This flaw permits attackers to authenticate without providing the correct password. The vulnerability affects Apache Tomcat versions from 7.0.0 through 7.0.109, 8.5.0 through 8.5.100, 9.0.0.M1 through 9.0.100, 10.1.0-M1 through 10.1.36, and 11.0.0-M1 through 11.0.4. The vendor has addressed this issue in versions 11.0.5, 10.1.37, and 9.0.101.
Potential Impact
Attackers can bypass password authentication when Apache Tomcat is configured to use JNDIRealm with GSSAPI, potentially allowing unauthorized access to the system. This undermines the authentication mechanism's integrity, leading to possible unauthorized system access.
Mitigation Recommendations
Users should upgrade Apache Tomcat to version 11.0.5, 10.1.37, or 9.0.101 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is provided in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-06-17T19:25:28.759Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42de5e27e9c797198071ac
Added to database: 06/29/2026, 21:06:38 UTC
Last enriched: 06/29/2026, 21:21:30 UTC
Last updated: 06/29/2026, 22:06:43 UTC
Views: 4
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