Mozilla Firefox Sandbox Escape Vulnerability in the Messaging System Component

Vulnerability

A sandbox escape vulnerability has been identified in the Messaging System component of Mozilla Firefox. This issue affects Firefox versions prior to 147. The vulnerability allows for escaping the sandbox, potentially leading to unauthorized actions or access.

Impact

Exploitation of this vulnerability allows for sandbox escape, which could lead to executing unauthorized actions or accessing restricted resources.

Remediation

Users can upgrade to Firefox 147 to address this vulnerability.

Added: Jan 13, 2026, 2:33 PM
Updated: Jan 13, 2026, 9:33 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
10.0
exploitability
4.4
remediation
7.7
relevance
2.0
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.