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CVE-2026-42498

Apache Tomcat: WebSocket authentication header exposure PUBLISHED

Description (CNA)

Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.2 through 9.0.117, from 8.5.24 through 8.5.100, from 7.0.83 through 7.0.109. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118, which fix the issue.

Affected (CNA)

Vendor / productVersions
Apache Software Foundation / Apache Tomcataffected 11.0.0-M1 through 11.0.21; affected 10.1.0-M1 through 10.1.54; affected 9.0.2 through 9.0.117; affected 8.5.24 through 8.5.100; affected 7.0.83 through 7.0.109

CWE

CWE-200

References

ADP enrichment

CVE

No English description supplied.

CISA-ADP

No English description supplied.

No references supplied.