Mattermost Summary

Mattermost has published 99 vulnerabilities in 2026.

Vulnerability Breakdown

CRITICAL
0
HIGH
14
MEDIUM
69
LOW
16

Vulnerability Severity By Month 2026

Total Mattermost Vulnerabilities

CRITICAL
23
HIGH
92
MEDIUM
375
LOW
94

Plus 2 vulnerabilities without a severity rating.

Vulnerability Severity By Year

Vulnerability Published Matrix for 2026

Vulnerability Published Matrix for 2025