High severity8.1NVD Advisory· Published Oct 14, 2025· Updated Apr 13, 2026
CVE-2025-11720
CVE-2025-11720
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.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- www.mozilla.org/security/advisories/mfsa2025-81/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions Required
- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions Required
News mentions
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