CVE-2026-55956

MEDIUM

Apache Tomcat: Security constraints for default servlet ignored method

Title source: cna
STIX 2.1

Description

Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint. 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, from 7.0.0 through 7.0.109. 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 fix the issue.

References (2)

Core 2

Scores

CVSS v3 6.5
EPSS 0.0041
EPSS Percentile 33.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-285
Status published
Products (7)
apache/tomcat < 9.0.119
Apache Software Foundation/Apache Tomcat < 7.0.0
Apache Software Foundation/Apache Tomcat 10.1.0-M1 - 10.1.55
Apache Software Foundation/Apache Tomcat 11.0.0-M1 - 11.0.22
Apache Software Foundation/Apache Tomcat 7.0.0 - 7.0.109
Apache Software Foundation/Apache Tomcat 8.5.0 - 8.5.100
Apache Software Foundation/Apache Tomcat 9.0.0.M1 - 9.0.118
Published Jun 29, 2026
Tracked Since Jun 30, 2026