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,"ranges":[{"events":[{"introduced":"11.0.0-M1"},{"fixed":"11.0.22"}],"type":"ECOSYSTEM"}],"versions":["11.0.0","11.0.0-M1","11.0.0-M10","11.0.0-M11","11.0.0-M12","11.0.0-M13","11.0.0-M14","11.0.0-M15","11.0.0-M16","11.0.0-M17","11.0.0-M18","11.0.0-M19","11.0.0-M20","11.0.0-M21","11.0.0-M22","11.0.0-M24","11.0.0-M25","11.0.0-M26","11.0.0-M3","11.0.0-M4","11.0.0-M5","11.0.0-M6","11.0.0-M7","11.0.0-M9","11.0.1","11.0.10","11.0.11","11.0.12","11.0.13","11.0.14","11.0.15","11.0.18","11.0.2","11.0.20","11.0.21","11.0.3","11.0.4","11.0.5","11.0.6","11.0.7","11.0.8","11.0.9"]}],"aliases":["CVE-2026-43512"],"database_specific":{"cwe_ids":["CWE-287"],"github_reviewed":true,"github_reviewed_at":"2026-05-18T20:38:27Z","nvd_published_at":"2026-05-12T16:16:17Z","severity":"CRITICAL"},"details":"Versions Affected:\nApache Tomcat 11.0.0-M1 to 11.0.21\nApache Tomcat 10.1.0-M1 to 10.1.54\nApache Tomcat 9.0.0.M1 to 9.0.117\nOlder, unsupported versions may also be affected\n\nDescription:\nWhen DIGEST authentication was configured, any user not known to the\nconfigured Realm would be authenticated if they presented the password\n\"null\".\n\nMitigation:\nUsers of the affected versions should apply one of the following\nmitigations:\n- Upgrade to Apache Tomcat 11.0.22 or later\n- Upgrade to Apache Tomcat 10.1.55 or later\n- Upgrade to Apache Tomcat 9.0.118 or later","id":"GHSA-h6fc-48rj-7qqh","modified":"2026-09-10T09:40:57.559831104Z","published":"2026-05-12T18:30:38Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43512"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/3d4d3fae07a6cd9c2eb193c5491001740ec64448"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/6565a6cb6499e56fe2f34457cec99f9d1c4f39e9"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/a99c355e8199adbfd67c9a1fffbd85b810b196cd"},{"type":"WEB","url":"https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73"},{"type":"WEB","url":"https://tomcat.apache.org/security-10.html"},{"type":"WEB","url":"https://tomcat.apache.org/security-11.html"},{"type":"WEB","url":"https://tomcat.apache.org/security-9.html"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/05/12/8"}],"schema_version":"1.9.0","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"}],"summary":"Apache Tomcat - Digest authenticator will authenticate any unknown user"}