CVE-2026-34500NVD

Vulnerability Summary

CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat.

This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116.

Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue.

Severity Level

MEDIUM(6.5)

Published Date

Apr 9, 2026

Last Modified

Apr 14, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.20%Probability

Root Weakness (CWE)

CWE-287: Improper Authentication ↗

When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.

CVSS v3.1 Base Metrics — Score 6.5 (MEDIUM)

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityLow

AvailabilityNone

Affected & Patched Versions

Affected Versions

Apache Tomcat >= 9.0.92 and < 9.0.117
Apache Tomcat >= 10.1.22 and < 10.1.54
Apache Tomcat >= 11.0.1 and < 11.0.21
Apache Tomcat

Patched Versions

Apache Tomcat 9.0.117
Apache Tomcat 10.1.54
Apache Tomcat 11.0.21

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