PT-2026-40070 · Apache+4 · Apache Tomcat+4

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CVE-2026-42498

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Published

2026-05-11

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Updated

2026-08-03

CVSS v2.0

7.5

High

VectorAV:N/AC:L/Au:N/C:P/I:P/A:P
Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.21 Apache Tomcat versions 10.1.0-M1 through 10.1.54 Apache Tomcat versions 9.0.2 through 9.0.117 Apache Tomcat versions 8.5.24 through 8.5.100 Apache Tomcat versions 7.0.83 through 7.0.109
Description An issue exists where the HTTP Authentication Header is exposed to unexpected hosts during WebSocket authentication.
Recommendations Upgrade versions 11.0.0-M1 through 11.0.21 to 11.0.22. Upgrade versions 10.1.0-M1 through 10.1.54 to 10.1.55. Upgrade versions 9.0.2 through 9.0.117 to 9.0.118.

Exploit

Fix

Information Disclosure

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Weakness Enumeration

Related Identifiers

BDU:2026-08082
BIT-TOMCAT-2026-42498
CLEANSTART-2026-NW12954
CVE-2026-42498
GHSA-FV25-8XCX-GQJC
OESA-2026-2296
OPENSUSE-SU-2026:10925-1
OPENSUSE-SU-2026:10926-1
OPENSUSE-SU-2026:10927-1
OPENSUSE-SU-2026:21117-1
OPENSUSE-SU-2026:21121-1
OPENSUSE-SU-2026:21122-1
RHSA-2026:13745
RHSA-2026:16528
RHSA-2026:43401
SUSE-SU-2026:22195-1
SUSE-SU-2026:22196-1
SUSE-SU-2026:22197-1
SUSE-SU-2026:2299-1
SUSE-SU-2026:2374-1
SUSE-SU-2026:2377-1
SUSE-SU-2026:2675-1
USN-8417-1
USN-8450-1

Affected Products

Apache Tomcat
Confluence
Linuxmint
Red Os
Ubuntu