Mozilla Firefox Same-Origin Policy Bypass Vulnerability in the DOM: Networking Component

Vulnerability

A same-origin policy bypass vulnerability has been identified in the DOM: Networking component of Mozilla Firefox. This vulnerability allows for unauthorized access or manipulation of resources from different origins, potentially leading to security issues such as cross-site request forgery or data theft. The vulnerability affects Firefox versions prior to 151.

Impact

Exploitation of this vulnerability allows for same-origin policy bypass, which could lead to unauthorized access or manipulation of resources from different origins.

Remediation

Users can upgrade to Firefox 151 to address this vulnerability.

Added: May 19, 2026, 2:49 PM
Updated: May 19, 2026, 2:49 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
0.6
exploitability
4.2
remediation
7.7
relevance
8.8
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.