Authentication Bypass Affecting tomcat-lib package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.28% (20th percentile)

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  • Snyk IDSNYK-RHEL9-TOMCATLIB-17716954
  • published30 Jun 2026
  • disclosed29 Jun 2026

Introduced: 29 Jun 2026

NewCVE-2026-55955  (opens in a new tab)
CWE-294  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:9 tomcat-lib.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat-lib package and not the tomcat-lib package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.0.18, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109.

Users are recommended to upgrade to version 11.0.23, 10.1.56, 9.0.119, which fixes the issue.

CVSS Base Scores

version 3.1