SecuriTricks - CVE-2026-42498

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.

Product(s) Impacted

Vendor	Product	Versions
Apache	Tomcat	7.0.83-7.0.109, 8.5.24-8.5.100, 9.0.2-9.0.117, 10.1.0-M1-10.1.54, 11.0.0-M1-11.0.21

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	apache	tomcat	7.0.83-7.0.109	/	/	/	/	/	/	/
a	apache	tomcat	8.5.24-8.5.100	/	/	/	/	/	/	/
a	apache	tomcat	9.0.2-9.0.117	/	/	/	/	/	/	/
a	apache	tomcat	10.1.0-M1-10.1.54	/	/	/	/	/	/	/
a	apache	tomcat	11.0.0-M1-11.0.21	/	/	/	/	/	/	/

References

https://lists.apache.org/thread/n61zwf75jrv09rz90j4jssncm244bwdb

http://www.openwall.com/lists/oss-security/2026/05/12/14

CVSS Score

7.3 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE
Scope: UNCHANGED
Confidentiality Impact: LOW
Integrity Impact: LOW
Availability Impact: LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

View Vector String

Timeline

Published: May 12, 2026, 4:16 p.m.
Last Modified: May 13, 2026, 4:16 p.m.

Status : Undergoing Analysis

CVE is currently being analyzed by NVD staff, this process results in association of reference link tags, CVSS scores, CWE association, and CPE applicability statements.

More info

Source

[email protected]

CVE-2026-42498