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CVE-2026-55956 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://www.openwall.com/lists/oss-security/2026/06/29/25	CVE	Third Party Advisory
https://lists.apache.org/thread/dcjdcnnnww9hhdm016hr0l7hpw1bzjfp	[email protected]	Vendor AdvisoryMailing List

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-285	Improper Authorization	[email protected]

Affected Products

Product	Versions
apache tomcat	< 9.0.119 >= 10.1.0, < 10.1.56 >= 11.0.0, < 11.0.23
CPE cpe:2.3:a:apache:tomcat:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jul 2, 2026	Initial Analysis	[email protected]
Jun 30, 2026	CVE Modified	CISA-ADP
Jun 29, 2026	CVE Modified	CVE
Jun 29, 2026	New CVE Received	[email protected]