Vulnerability in Mozilla Firefox_focus
CVE-2026-2919
Malicious scripts could display attacker-controlled web content under spoofed domains in Focus for iOS by stalling a _self navigation to an invalid port and triggering an iframe redirect, causing the UI to display a trusted domain without…
EPSS: 0.000 (1.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
Affected products
- Mozilla Firefox_focus
- Mozilla Focus For Ios — versions 148.2
Weakness classification (CWE)
References
- security@mozilla.org (Permissions Required)
- security@mozilla.org (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-2919?
- CVE-2026-2919 is a medium-severity vulnerability in Mozilla Firefox_focus, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 4.3/10. Published 2026-03-09.
- How severe is CVE-2026-2919?
- Medium severity. CVSS v3 base score is 4.3 out of 10.