VYPR
Unrated severityNVD Advisory· Published Jun 30, 2026

Debian tomcat9: Missing Critical Step in Authentication vulnerability in Apache Tomcat when the …

CVE-2026-55957

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 products

2
  • Apache/Tomcatinferred2 versions
    >=7.0.0,<7.0.109+ 1 more
    • (no CPE)range: >=7.0.0,<7.0.109
    • (no CPE)range: 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

Patches

Vulnerability mechanics

News mentions

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CVE-2026-55957 · VYPR