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CVE-2026-40596

CVE-2026-40596 · MantisBT is vulnerable to XSS and potential account takeover via user font family preference update

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.11.0 through 2.28.1 allow any authenticated user to inject arbitrary HTML by updating their account's font family. Upon exploitation, an XSS payload would be reflected on every MantisBT page. Leveraging another vulnerability (CSP bypass, see GHSA-9c3j-xm6v-j7j3), the attacker could achieve account takeover. This issue has been fixed in version 2.28.2.

CVSS 7.2 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • mantisbt

    Versions
    • >= 2.11.0, < 2.28.2: Affected

    No fix published

  • mantisbt/mantisbt Packagist

    Versions
    • 2.11.0
    • 2.11.1
    • 2.12.0
    • 2.12.1
    • 2.12.2
    • 2.13.0
    • 2.13.1
    • 2.13.2
    • 2.14.0
    • 2.15.0
    • 2.15.1
    • 2.16.0
    • 2.16.1
    • 2.17.0
    • 2.17.1
    • 2.17.2
    • 2.18.0
    • 2.18.1
    • 2.19.0
    • 2.19.1
    • 2.20.0
    • 2.20.1
    • 2.21.0
    • 2.21.1
    • 2.21.2
    • 2.21.3
    • 2.22.0
    • 2.22.1
    • 2.22.2
    • 2.23.0
    • 2.23.1
    • 2.24.0
    • 2.24.1
    • 2.24.2
    • 2.24.3
    • 2.24.4
    • 2.24.5
    • 2.25.0
    • 2.25.1
    • 2.25.2
    • 2.25.3
    • 2.25.4
    • 2.25.5
    • 2.25.6
    • 2.25.7
    • 2.25.8
    • 2.26.0
    • 2.26.1
    • 2.26.2
    • 2.26.3
    • 2.26.4
    • 2.27.0
    • 2.27.1
    • 2.27.2
    • 2.27.3
    • 2.28.0
    • 2.28.1
    Affected ranges
    • ECOSYSTEM: ≥ 2.11.0, < 2.28.2

    Update to 2.28.2

Original sources

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