CVE-2026-55276

critical · 9.1

Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat meant that special roles and empty authorisation constraints were not included when the effective web.xml was logged. 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. 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 fixes the issue.

9.1

CVSS

0.6%

EPSS (exploit prob.)

46th

EPSS percentile

2026-06-29

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CWE-670

Affected products

Vendor	Product	Affected versions
apache	tomcat	< 9.0.119
apache	tomcat	>= 10.1.0, < 10.1.56
apache	tomcat	>= 11.0.0, < 11.0.23

Check a specific version with /api/v1/cve/match.

References

https://lists.apache.org/thread/jy09xjlzn6r2qwvqoph8vcmf959yq68v
http://www.openwall.com/lists/oss-security/2026/06/29/23

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-55276