{"id":"CVE-2026-66422","state":"PUBLISHED","title":"Apache Tomcat: Servlet role references can bypass declarative role constraints","description":"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.","publishedAt":"2026-08-25T21:55:16.928Z","updatedAt":"2026-08-26T18:52:26.487Z","severity":{"score":8.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache Tomcat"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Tomcat","defaultStatus":"unaffected","versions":[{"version":"11.0.0-M1","status":"affected","lessThanOrEqual":"11.0.24","versionType":"semver"},{"version":"10.1.0-M1","status":"affected","lessThanOrEqual":"10.1.57","versionType":"semver"},{"version":"9.0.25","status":"affected","lessThanOrEqual":"9.0.120","versionType":"semver"},{"version":"8.5.46","status":"affected","lessThanOrEqual":"8.5.100","versionType":"semver"},{"version":"7.0.97","status":"affected","lessThanOrEqual":"7.0.109","versionType":"semver"},{"version":"0","status":"unaffected","lessThan":"7.0.97","versionType":"semver"}]}],"references":["https://lists.apache.org/thread/j5plylz1b2vhqvbkqn7k58nygxhcpk73","http://www.openwall.com/lists/oss-security/2026/08/26/6"],"weaknesses":["CWE-285"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/66xxx/CVE-2026-66422.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-66422","state":"PUBLISHED","datePublished":"2026-08-25T21:55:16.928Z","dateUpdated":"2026-08-26T18:52:26.487Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-07-27T07:51:40.260Z"},"containers":{"cna":{"title":"Apache Tomcat: Servlet role references can bypass declarative role constraints","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Tomcat","defaultStatus":"unaffected","versions":[{"version":"11.0.0-M1","status":"affected","lessThanOrEqual":"11.0.24","versionType":"semver"},{"version":"10.1.0-M1","status":"affected","lessThanOrEqual":"10.1.57","versionType":"semver"},{"version":"9.0.25","status":"affected","lessThanOrEqual":"9.0.120","versionType":"semver"},{"version":"8.5.46","status":"affected","lessThanOrEqual":"8.5.100","versionType":"semver"},{"version":"7.0.97","status":"affected","lessThanOrEqual":"7.0.109","versionType":"semver"},{"version":"0","status":"unaffected","lessThan":"7.0.97","versionType":"semver"}]}],"references":[{"url":"https://lists.apache.org/thread/j5plylz1b2vhqvbkqn7k58nygxhcpk73","tags":["vendor-advisory"]}],"metrics":[{"other":{"type":"Textual description of severity","content":{"text":"low"}},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-285","description":"CWE-285 Improper Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-08-25T21:55:16.928Z"},"source":{"discovery":"EXTERNAL"},"credits":[{"lang":"en","value":"4ra1n, pyn3rd and unam4","type":"finder"}],"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/08/26/6"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-08-26T02:30:38.956Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":8.1,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-26T18:52:06.586786Z","id":"CVE-2026-66422","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-26T18:52:26.487Z"}}]}}}