Vulnerability record · CVE-2026-44657 · published 28 May 2026

CVE-2026-44657: Cross-site scripting vulnerability

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.

7.5 CVSS 4.0 High EPSS 0.58% · top 54.4% CWE-79 · Cross-site scripting Deferred

7.5CVSS 4.0 base score

0.58%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

4References

21 Jul 2026Last modified by NVD

Description

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

Link	Tags
https://github.com/mantisbt/mantisbt/commit/26647b2e68ba30b9d7987d4e03d7a16416684bc2
https://github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3
https://github.com/mantisbt/mantisbt/security/advisories/GHSA-p6fr-rxq7-xcg8
https://mantisbt.org/bugs/view.php?id=37020

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-44657), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.