p PatchFirst

CVE-2025-46556

CVE-2025-46556 · MantisBT is Vulnerable to Denial-of-Service (DoS) attack via Excessive Note Length

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 2.27.1 and below allow attackers to permanently corrupt issue activity logs by submitting extremely long notes (tested with 4,788,761 characters) due to a lack of server-side validation of note length. Once such a note is added, the activity stream UI fails to render; therefore, new notes cannot be displayed, effectively breaking all future collaboration on the issue. This issue is fixed in version 2.27.2.

CVSS 6.5 · Medium · EPSS 0.4% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • mantisbt

    Versions
    • < 2.27.2: Affected

    No fix published

  • mantisbt/mantisbt Packagist

    Versions
    • 2.10.0
    • 2.10.1
    • 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
    • 2.3.0
    • 2.3.1
    • 2.3.2
    • 2.3.3
    • 2.4.0
    • 2.4.1
    • 2.4.2
    • 2.5.0
    • 2.5.1
    • 2.5.2
    • 2.6.0
    • 2.7.0
    • 2.7.1
    • 2.8.0
    • 2.8.1
    • 2.9.0
    • 2.9.1
    Affected ranges
    • ECOSYSTEM: < 2.27.2

    Update to 2.27.2

Original sources

Check your server →