CVE-2026-55957

Missing Critical Step in Authentication vulnerability in Apache Tomcat when the JNDIRealm was configured to authenticate binds using GSSAPI allowed attackers to authenticate without provided the correct password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.4, from 10.1.0-M1 through 10.1.36, from 9.0.0.M1 through 9.0.100, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Users are recommended to upgrade to version 11.0.5, 10.1.37 or 9.0.101, which fixes the issue.

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/7fk339o5jvd4mcgsf0chbrn4o525ccjh	Vendor Advisory Mailing List
http://www.openwall.com/lists/oss-security/2026/06/29/26	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) Vulnerabilidad de Paso Crítico Faltante en la Autenticación en Apache Tomcat cuando el JNDIRealm estaba configurado para autenticar enlaces usando GSSAPI permitió a los atacantes autenticarse sin proporcionar la contraseña correcta. Este problema afecta a Apache Tomcat: desde 11.0.0-M1 hasta 11.0.4, desde 10.1.0-M1 hasta 10.1.36, desde 9.0.0.M1 hasta 9.0.100, desde 8.5.0 hasta 8.5.100, desde 7.0.0 hasta 7.0.109. Se recomienda a los usuarios actualizar a la versión 11.0.5, 10.1.37 o 9.0.101, que corrige el problema.

Information

Published : 2026-06-29 21:16

Updated : 2026-10-25 21:10

NVD link : CVE-2026-55957

Mitre link : CVE-2026-55957

CVE.ORG link : CVE-2026-55957

JSON object : View

Products Affected

apache

tomcat

CWE

CWE-304

Missing Critical Step in Authentication

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