High severityGHSA Advisory· Published May 28, 2026· Updated May 29, 2026
CVE-2026-44657
CVE-2026-44657
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
mantisbt/mantisbtPackagist | < 2.28.2 | 2.28.2 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-p6fr-rxq7-xcg8ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-44657ghsaADVISORY
- github.com/mantisbt/mantisbt/commit/26647b2e68ba30b9d7987d4e03d7a16416684bc2nvdWEB
- github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3nvdWEB
- github.com/mantisbt/mantisbt/security/advisories/GHSA-p6fr-rxq7-xcg8nvdWEB
- mantisbt.org/bugs/view.phpnvdWEB
News mentions
1- MantisBT: Five Bugs Disclosed Together — XSS, Auth Bypass, and Missing Access ControlsVypr Intelligence · May 28, 2026