MantisBT Vulnerable to Stored XSS in File Download
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. ### Impact Cross-site scripting ### Patches - 26647b2e68ba30b9d7987d4e03d7a16416684bc2 ### Workarounds None ### Credits Thanks to siunam (Tang Cheuk Hei) for discovering and responsibly reporting the issue.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-44657US | — | — | ||
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… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/mantisbt/mantisbtPACKAGE
- https://github.com/mantisbt/mantisbt/commit/26647b2e68ba30b9d7987d4e03d7a16416684bc2WEB
- https://github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3WEB
- https://github.com/mantisbt/mantisbt/security/advisories/GHSA-p6fr-rxq7-xcg8WEB
- https://mantisbt.org/bugs/view.php?id=37020WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-44657ADVISORY
scry
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