CVE-2026-43515

Apache Tomcat: Security constraints not correctly applied

State: Published
Severity: 9.1 Critical
Published: May 12, 2026
Updated: Jun 4, 2026
Reserved: May 1, 2026

Description

Improper Authorization vulnerability when multiple method constraints define an HTTP method for the same extension 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 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.

Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	CISA-ADP

Weaknesses

CWE-285 Improper Authorization

Affected Products

Product	Versions
Apache TomcatApache Software Foundation	11.0.0-M1 through 11.0.21Affected 10.1.0-M1 through 10.1.54Affected 9.0.0.M1 through 9.0.117Affected 8.5.0 through 8.5.100Affected 7.0.0 through 7.0.109Affected before 7.0.0Unknown

References

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