Mattermost Mobile Apps Post Prop Validation Vulnerability Leading to Crashes

A vulnerability exists in Mattermost Mobile Apps in versions through 2.22.0, where the application fails to properly validate post properties. This flaw allows a malicious authenticated user to send a harmful post that can cause the app to crash.

Impact

Exploitation of this vulnerability leads to a denial-of-service condition, causing the application to crash.

Remediation

Users are advised to update to the latest version of the Mattermost Mobile App, as the company follows a mandatory upgrade policy and only provides updates for the latest release.