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

Weakness classification (CWE)

References

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.