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Mattermost Mobile Attachment Processing Vulnerability Leading to Denial-of-Service

Vulnerability

A denial-of-service vulnerability has been identified in Mattermost Mobile versions through 2.22.0. The issue arises because the application fails to properly manage posts with attachments that include fields not convertible to a string. This flaw allows an attacker to create and send such a post to a channel, causing the mobile application to crash.

Impact

Exploiting this vulnerability leads to a crash of the Mattermost Mobile application, causing a denial-of-service condition on the user's device.

Added: Jun 9, 2025, 7:46 PM
Updated: Jun 9, 2025, 7:46 PM

Vulnerability Rating

Custom Algorithm
spread
0.0
impact
1.3
exploitability
3.0
remediation
0.0
relevance
0.0
threat
0.0
urgency
2.9
incentive
0.8

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.