CVE-2025-11720

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 affects Firefox < 144.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1979534	Issue Tracking Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1984370	Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-81/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

cpe:2.3:o:google:android:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-10-14 13:15

Updated : 2025-10-15 18:10

NVD link : CVE-2025-11720

Mitre link : CVE-2025-11720

CVE.ORG link : CVE-2025-11720

JSON object : View

Products Affected

google

android

mozilla

firefox

CWE

CWE-451

User Interface (UI) Misrepresentation of Critical Information

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