CVE-2009-20001: Mantisbt

High severity, CVSS 8.1. EPSS: 0.9% chance of exploitation in the next 30 days.

An issue was discovered in MantisBT before 2.24.5. It associates a unique cookie string with each user. This string is not reset upon logout (i.e., the user session is still considered valid and active), allowing an attacker who somehow gained access to a user's cookie to login as them.

Affected products

• Mantisbt Mantisbt: before 2.24.5 (fixed in 2.24.5)

Published 2021-03-07. Last modified 2026-06-16.