Same-Origin Policy Bypass in Firefox and Firefox ESR

CVE-2025-13019

What is CVE-2025-13019?

A vulnerability in the Workers component of the Firefox browser allows for a bypass of the same-origin policy, which could potentially allow malicious scripts to interact with content from different origins. Affected users running versions of Firefox below 145 and Firefox ESR below 140.5 may be at risk. It’s crucial for users to update their browsers to the latest versions to mitigate potential exploitation.

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