CVE-2025-11720

HighCVSS 8.1/10Last modified Oct 8, 2026

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.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-451

Affected software

No affected versions have been published.

Timeline

Published
Oct 14, 2025
Last modified
Oct 8, 2026
NVD status
Modified

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CVE-2025-11720: High severity, CVSS 8.1 | Vulnix