CVE-2026-103418

Name of the Vulnerable Software and Affected Versions Firefox for iOS versions prior to 157.1

Description Firefox for iOS directly interpolated the page HTML language attribute into translation JavaScript. This allows attacker-controlled markup to execute code within the privileged content world of the browser and bypass the Content Security Policy (CSP), a security layer that helps detect and mitigate certain types of attacks, including cross-site scripting and data injection.

Recommendations Update to Firefox for iOS version 157.1.