MantisBT: Stored XSS in File Download_CVE-2026-44657

7.5 / 10

HIGH

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

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.

Basic Information

ID CVE-2026-44657

Source GitHub_M

Published May 28, 2026 at 20:25

Affected Product

Vendor mantisbt

Product mantisbt

Version < 2.28.2

Affected Versions mantisbt mantisbt < 2.28.2

CWE Classification

CWE-79

References

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    "lastseen": "",
    "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.",
    "published": "2026-05-28T20:25:26.816Z",
    "modified": "2026-05-28T20:25:26.816Z",
    "type": "cve",
    "title": "MantisBT: Stored XSS in File Download",
    "source": "GitHub_M",
    "references": "https://github.com/mantisbt/mantisbt/security/advisories/GHSA-p6fr-rxq7-xcg8\nhttps://github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3\nhttps://github.com/mantisbt/mantisbt/commit/26647b2e68ba30b9d7987d4e03d7a16416684bc2\nhttps://mantisbt.org/bugs/view.php?id=37020",
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    "sourceData": "mantisbt mantisbt < 2.28.2",
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    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "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",
        "version": "4.0"
    },
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        "cvssV3": {
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