Unrated severityNVD Advisory· Published Jun 30, 2026
Debian tomcat9: Improper Authorization vulnerability in Apache Tomcat leads to security constrai…
CVE-2026-55956
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.
Affected products
2>=11.0.0-M1,<=11.0.22, >=10.1.0-M1,<=10.1.55, >=9.0.0.M1,<=9.0.118, >=8.5.0,<=8.5.100, >=7.0.0,<=7.0.109+ 1 more
- (no CPE)range: >=11.0.0-M1,<=11.0.22, >=10.1.0-M1,<=10.1.55, >=9.0.0.M1,<=9.0.118, >=8.5.0,<=8.5.100, >=7.0.0,<=7.0.109
- (no CPE)range: 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
Patches
Vulnerability mechanics
News mentions
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