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CVE-2025-11720

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CVE-2025-11720

Published: Oct 14, 2025

Modified: Apr 13, 2026

PUBLISHED

Description

The Firefox and Firefox Focus UI for the Android custom tab feature only showed the "site" that was loaded, not the full hostname. User supplied content hosted on a subdomain of a site could have been used to fool a user into thinking it was content from a different subdomain of that site. This vulnerability was fixed in Firefox 144.

VendorProductVersions

Mozilla

Firefox

unaffected
144 - <= *

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