CVE WatchJul 2, 2026

CVE-2026-55957

Missing Critical Step in Authentication vulnerability in Apache Tomcat when the JNDIRealm was configured to authenticate binds using GSSAPI

CVSS

7.3

High

EPSS

0.5%

p37

KEV

—

Exploit Today

0-100

Published: Jun 29, 2026 · Last modified: Jul 2, 2026 · CWE-304

EPSS · 30d

0.2%EPSS · 30 days0.5%

2026-06-302026-07-16

Technical 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.

Official references

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