CVE-2025-30516: Mattermost Mobile

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Mattermost Mobile Apps versions <=2.25.0  fail to terminate sessions during logout under certain conditions (e.g. poor connectivity), allowing unauthorized users on shared devices to access sensitive notification content via continued mobile notifications

Affected products

• Mattermost Mattermost Mobile: before 2.26.0 (fixed in 2.26.0)

Published 2025-04-14. Last modified 2026-06-17.