Mozilla Summary

Mozilla has published 268 vulnerabilities in 2026.

Vulnerability Breakdown

CRITICAL
69
HIGH
125
MEDIUM
64
LOW
0

Plus 10 vulnerabilities yet to be given a severity rating.

Vulnerability Severity By Month 2026

Total Mozilla Vulnerabilities

CRITICAL
382
HIGH
781
MEDIUM
766
LOW
17

Plus 1,453 vulnerabilities without a severity rating.

Vulnerability Severity By Year

Vulnerability Published Matrix for 2026

Vulnerability Published Matrix for 2025