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.
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 |
|
History
05 Oct 2026, 15:10
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (es) La interfaz de usuario de Firefox y Firefox Focus para la función de pestaña personalizada de Android solo mostraba el 'sitio' que se cargaba, no el nombre de host completo. Contenido proporcionado por el usuario alojado en un subdominio de un sitio podría haberse utilizado para engañar a un usuario haciéndole creer que era contenido de un subdominio diferente de ese sitio. Esta vulnerabilidad afecta a Firefox menor que 144. |
30 Sep 2026, 17:10
| Type | Values Removed | Values Added |
|---|---|---|
| Summary |
|
Information
Published : 2025-10-14 13:15
Updated : 2026-10-08 12:10
NVD link : CVE-2025-11720
Mitre link : CVE-2025-11720
CVE.ORG link : CVE-2025-11720
JSON object : View
Products Affected
mozilla
- firefox
- android
CWE
CWE-451
User Interface (UI) Misrepresentation of Critical Information
