Mozilla Summary

Mozilla has published 124 vulnerabilities in 2026.

Vulnerability Breakdown

CRITICAL
53
HIGH
51
MEDIUM
17
LOW
0

Plus 3 vulnerabilities yet to be given a severity rating.

Vulnerability Severity By Month 2026

Total Mozilla Vulnerabilities

CRITICAL
365
HIGH
707
MEDIUM
714
LOW
16

Plus 1,453 vulnerabilities without a severity rating.

Vulnerability Severity By Year

Vulnerability Published Matrix for 2026

Vulnerability Published Matrix for 2025