{"id":"GHSA-ggw7-9675-6v4v","summary":"MantisBT has an authorization bypass in private issue monitoring","details":"Using a crafted POST request to bug_monitor_add.php, a user with project-level access can add themselves as a monitor for a private issue they do not have access to. Despite displaying an Access Denied error, the application accepts the request and creates a monitor relationship for the private issue.\n\n\n### Impact\nDirect access to the private issue remains blocked, but the user will receive email notifications for updates, leading to disclosure of the private issue's metadata and content.\n\n### Patches\n- 0a93267deba445fb9d15250c16e6fdb1246ffa65\n\n### Workarounds\nNone\n\n### Credits\nThanks to Vishal Shukla for discovering and responsibly reporting the issue.","aliases":["CVE-2026-34579"],"modified":"2026-09-10T03:51:05.765789042Z","published":"2026-05-11T19:32:22Z","database_specific":{"cwe_ids":["CWE-200","CWE-201"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-05-11T19:32:22Z","nvd_published_at":"2026-05-19T23:16:57Z"},"references":[{"type":"WEB","url":"https://github.com/mantisbt/mantisbt/security/advisories/GHSA-ggw7-9675-6v4v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34579"},{"type":"WEB","url":"https://github.com/mantisbt/mantisbt/commit/0a93267deba445fb9d15250c16e6fdb1246ffa65"},{"type":"PACKAGE","url":"https://github.com/mantisbt/mantisbt"},{"type":"WEB","url":"https://mantisbt.org/bugs/view.php?id=36975"}],"affected":[{"package":{"name":"mantisbt/mantisbt","ecosystem":"Packagist","purl":"pkg:composer/mantisbt/mantisbt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.26.1"},{"fixed":"2.28.2"}]}],"versions":["2.26.1","2.26.2","2.26.3","2.26.4","2.27.0","2.27.1","2.27.2","2.27.3","2.28.0","2.28.1"],"database_specific":{"last_known_affected_version_range":"\u003c= 2.28.1","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-ggw7-9675-6v4v/GHSA-ggw7-9675-6v4v.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}