Critical severity9.1NVD Advisory· Published Jun 29, 2026· Updated Jul 2, 2026
CVE-2026-55276
CVE-2026-55276
Description
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.
Affected products
9- osv-coords7 versionspkg:bitnami/tomcatpkg:rpm/opensuse/tomcat&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/tomcat&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/tomcat10&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/tomcat10&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/tomcat11&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/tomcat11&distro=openSUSE%20Tumbleweed
< 9.0.119+ 6 more
- (no CPE)range: < 9.0.119
- (no CPE)range: < 9.0.119-160000.1.1
- (no CPE)range: < 9.0.119-1.1
- (no CPE)range: < 10.1.56-160000.1.1
- (no CPE)range: < 10.1.56-1.1
- (no CPE)range: < 11.0.23-160000.1.1
- (no CPE)range: < 11.0.23-1.1
Patches
Vulnerability mechanics
References
2- www.openwall.com/lists/oss-security/2026/06/29/23nvdThird Party Advisory
- lists.apache.org/thread/jy09xjlzn6r2qwvqoph8vcmf959yq68vnvdVendor AdvisoryMailing List
News mentions
1- Apache Software Foundation: 21 Vulnerabilities Across Multiple Products Disclosed in Early July 2026Vypr Intelligence · Jul 3, 2026