CVE-2025-46556

Published: Nov 4, 2025Modified: Nov 7, 2025

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

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.

Affected (1)

Products: Mantisbt: Mantisbt

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Mantisbt Mantisbt	Before 2.27.2

Related CWEs

Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References (4)

https://github.com/mantisbt/mantisbt/commit/c99a41272532ba49b5c8dccb7797afead9864234

Source: security-advisories@github.com

Patch

https://github.com/mantisbt/mantisbt/commit/d5cec6bffb44d54bd412c186b9baa409b1aa4238

Source: security-advisories@github.com

Patch

https://github.com/mantisbt/mantisbt/commit/e9119c68b4a0eaa0bbde3deb121e81f5f7157361

Source: security-advisories@github.com

Patch

https://github.com/mantisbt/mantisbt/security/advisories/GHSA-r3jf-hm7q-qfw5

Source: security-advisories@github.com

Vendor Advisory

Timeline

No history available yet.