{"id":"CVE-2026-44657","published":"2026-05-28T20:25:26Z","modified":"2026-05-29T14:50:03Z","title":"MantisBT: Stored XSS in File Download","vendor":"mantisbt","product":"mantisbt","tier":"tail","description":{"text":"Mantis Bug Tracker (MantisBT) is an open source issue tracker. Prior to 2.28.2, using show_inline=1 parameter and a valid file_show_inline_token CSRF token on file_download.php, an attacker can execute code by uploading a crafted XHTML attachment referencing a JavaScript attachment. This vulnerability is fixed in 2.28.2.","provenance":"source","from":"CVE.org"},"cvss":{"score":7.5,"severity":"HIGH","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00349,"percentile":0.28454,"provenance":"source"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"references":[{"url":"https://github.com/mantisbt/mantisbt/security/advisories/GHSA-p6fr-rxq7-xcg8","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3","tags":["x_refsource_MISC"]},{"url":"https://github.com/mantisbt/mantisbt/commit/26647b2e68ba30b9d7987d4e03d7a16416684bc2","tags":["x_refsource_MISC"]},{"url":"https://mantisbt.org/bugs/view.php?id=37020","tags":["x_refsource_MISC"]}],"priority":{"score":10.9,"factors":[{"name":"EPSS percentile","points":5.69},{"name":"CVSS severity","points":5.25}]},"vendorSlug":"mantisbt","affectedVersions":[{"vendor":"mantisbt","product":"mantisbt","versions":["< 2.28.2"]}],"affected":[{"ecosystem":"Packagist","package":"mantisbt/mantisbt","vulnerableRanges":["<2.28.2"],"patched":["2.28.2"],"from":["GHSA-p6fr-rxq7-xcg8"],"provenance":"source"}],"euvd":{"id":"EUVD-2026-33023","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-mantisbt-cve-2026-40596","parents":[{"from":"CVE-2026-40597","to":"CVE-2026-44657","relation":"related","confidence":"high","kind":"lineage","evidence":[{"kind":"osv-related","provenance":"source","id":"GHSA-9c3j-xm6v-j7j3","via":"related"},{"kind":"osv-related","provenance":"source","id":"GHSA-p6fr-rxq7-xcg8","via":"reference","url":"https://github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3"}]}]}}