CVE-2026-55276

Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat meant that special roles and empty authorisation constraints were not included when the effective web.xml was logged. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119 which fixes the issue.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/jy09xjlzn6r2qwvqoph8vcmf959yq68v	Vendor Advisory Mailing List
http://www.openwall.com/lists/oss-security/2026/06/29/23	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:tomcat::::::::
	cpe:2.3:a:apache:tomcat::::::::
	cpe:2.3:a:apache:tomcat::::::::

History

25 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) La vulnerabilidad de Implementación de flujo de control siempre incorrecta en Apache Tomcat significaba que los roles especiales y las restricciones de autorización vacías no se incluían cuando se registraba el web.xml efectivo. Este problema afecta a Apache Tomcat: desde 11.0.0-M1 hasta 11.0.22, desde 10.1.0-M1 hasta 10.1.55, desde 9.0.0.M1 hasta 9.0.118, desde 8.5.0 hasta 8.5.100. Otras versiones que han llegado al fin de su soporte también pueden verse afectadas. Se recomienda a los usuarios actualizar a la versión 11.0.23, 10.1.56 o 9.0.119, que corrige el problema.

Information

Published : 2026-06-29 21:16

Updated : 2026-10-25 21:10

NVD link : CVE-2026-55276

Mitre link : CVE-2026-55276

CVE.ORG link : CVE-2026-55276

JSON object : View

Products Affected

apache

tomcat

CWE

CWE-670

Always-Incorrect Control Flow Implementation

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