{"id":"CVE-2026-66422","summary":"Apache Tomcat: Servlet role references can bypass declarative role constraints","details":"Improper Authorization vulnerability in Apache Tomcat cause by security-role-ref definitions being incorrectly used as role aliases within the Realm in additional to the correct usage with Request.isUserInRole().\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.25 through 9.0.120.\n\n\n\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: from 8.5.46 through 8.5.100, from 7.0.97 through 7.0.109. Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.","aliases":["BIT-tomcat-2026-66422"],"modified":"2026-08-28T16:55:36.123740835Z","published":"2026-08-25T21:55:16.928Z","database_specific":{"unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"11.0.0-M1"},{"last_affected":"11.0.24"},{"introduced":"10.1.0-M1"},{"last_affected":"10.1.57"},{"introduced":"9.0.25"},{"last_affected":"9.0.120"},{"introduced":"8.5.46"},{"last_affected":"8.5.100"},{"introduced":"7.0.97"},{"last_affected":"7.0.109"}]},{"source":"DESCRIPTION","extracted_events":[{"introduced":"11.0.0-M1"},{"fixed":"11.0.24"},{"introduced":"10.1.0-M1"},{"fixed":"10.1.57"},{"introduced":"9.0.25"},{"fixed":"9.0.120"},{"introduced":"8.5.46"},{"fixed":"8.5.100"},{"introduced":"7.0.97"},{"fixed":"7.0.109"}]}],"cna_assigner":"apache","cwe_ids":["CWE-285"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66422.json"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/08/26/6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66422.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/j5plylz1b2vhqvbkqn7k58nygxhcpk73"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66422"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/tomcat","events":[{"introduced":"1cfec207b09fed52965f0d0426059ca989daf3b4"},{"last_affected":"2cdef2c0241cdf70b5edd88d3733a52e6b675047"}],"database_specific":{"extracted_events":[{"introduced":"7.0.97"},{"last_affected":"7.0.109"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-66422.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"}]}