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Mozilla Firefox and Firefox ESR Mitigation Bypass Vulnerability in the DOM: Security Component

Vulnerability

A mitigation bypass vulnerability has been identified in the DOM: Security component of Mozilla Firefox and Firefox ESR. This vulnerability allows for the circumvention of security measures, potentially leading to unauthorized actions or access. It affects Firefox versions prior to 150 and Firefox ESR versions prior to 140.10.

Impact

Exploitation of this vulnerability could lead to a bypass of security mitigations, potentially allowing for unauthorized actions or access that should be restricted.

Remediation

Users can upgrade to Firefox 150 or Firefox ESR 140.10 to address this vulnerability.

Added: Apr 21, 2026, 1:52 PM
Updated: Apr 21, 2026, 1:52 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
0.6
exploitability
4.2
remediation
7.7
relevance
6.4
threat
0.0
urgency
2.9
incentive
0.0

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