CVE-2025-11720
published 2025-10-14CVE-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…
PriorityP340high8.1CVSS 3.1
AVNACLPRNUIRSUCHIHAN
EPSS
0.25%
16.4th percentile
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
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | — | — |
| mozilla | firefox | < 144.0 | 144.0 |
| mozilla | firefox | — | — |
CVSS provenance
nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
osv8.1HIGH
vendor_debian8.1LOW
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OSV
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
osv·2025-10-14·CVSS 8.1
CVE-2025-11720 [HIGH] 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
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.
GHSA
GHSA-wjv8-8vf9-mrv8: The Firefox and Firefox Focus UI for the Android custom tab feature only showed the "site" that was loaded, not the full hostname
ghsa_unreviewed·2025-10-14
CVE-2025-11720 [HIGH] CWE-451 GHSA-wjv8-8vf9-mrv8: The Firefox and Firefox Focus UI for the Android custom tab feature only showed the "site" that was loaded, not the full hostname
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.
Debian
CVE-2025-11720: firefox - The Firefox and Firefox Focus UI for the Android custom tab feature only showed ...
vendor_debian·2025·CVSS 8.1
CVE-2025-11720 [HIGH] CVE-2025-11720: firefox - The Firefox and Firefox Focus UI for the Android custom tab feature only showed ...
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.
Scope: local
sid: resolved
Mozilla
Mozilla Foundation Security Advisory 2025-81: CVE-2025-11720
vendor_mozilla·CVSS 8.1
CVE-2025-11720 [HIGH] Mozilla Foundation Security Advisory 2025-81: CVE-2025-11720
Mozilla Foundation Security Advisory 2025-81
CVE: CVE-2025-11720
Product: Firefox
Impact: high
Fixed in: Firefox 144
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-10-14
Published