CVE-2025-1558: Mattermost Mobile

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Mattermost Mobile Apps versions <=2.25.0 fail to properly validate GIF images prior to rendering which allows a malicious user to cause the Android application to crash via message containing a maliciously crafted GIF.

Affected products

• Mattermost Mattermost Mobile: before 2.25.1 (fixed in 2.25.1)

Published 2025-03-24. Last modified 2026-06-17.