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CVE PROGRAM SOURCE RECORD7.3 High

CVE-2026-42498

Apache Tomcat: WebSocket authentication header exposure

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
apache

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Apache Software Foundation Apache Tomcat

Default version status: unaffected

  • 11.0.0-M1 to ≤ 11.0.21affected
  • 10.1.0-M1 to ≤ 10.1.54affected
  • 9.0.2 to ≤ 9.0.117affected
  • 8.5.24 to ≤ 8.5.100affected
  • 7.0.83 to ≤ 7.0.109affected

References