Apache Tomcat: Principal lookup can fail open in some cases

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-68569
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-25 22:17:05 UTC
Updated2026-08-25 22:17:05 UTC
DescriptionImproper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g. CLIENT-CERT, SPNEGO) that a user would be authenticated even if the user did not exist in the DataSourceRealm. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.

Risk And Classification

Problem Types: CWE-287 | CWE-287 CWE-287 Improper Authentication

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache Tomcat affected 11.0.0-M1 11.0.24 semver Not specified
CNA Apache Software Foundation Apache Tomcat affected 10.1.0-M1 10.1.57 semver Not specified
CNA Apache Software Foundation Apache Tomcat affected 9.0.0.M1 9.0.120 semver Not specified
CNA Apache Software Foundation Apache Tomcat affected 8.5.0 8.5.100 semver Not specified
CNA Apache Software Foundation Apache Tomcat affected 7.0.0 70.109 semver Not specified
CNA Apache Software Foundation Apache Tomcat unknown 7.0.0 semver Not specified

References

ReferenceSourceLinkTags
lists.apache.org/thread/8robqo76q0osxgw0b5lcwgz0hcf9h4zc [email protected] lists.apache.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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