CVE-2024-1949: Mattermost Server

Low severity, CVSS 2.6. EPSS: 0.3% chance of exploitation in the next 30 days.

A race condition in Mattermost versions 8.1.x before 8.1.9, and 9.4.x before 9.4.2 allows an authenticated attacker to gain unauthorized access to individual posts' contents via carefully timed post creation while another user deletes posts.

Affected products

• Mattermost Mattermost Server: from 8.1.0, before 8.1.9 (fixed in 8.1.9); from 9.4.0, before 9.4.2 (fixed in 9.4.2)

Published 2024-02-29. Last modified 2026-06-17.