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 user interaction. This vulnerability was fixed in Focus for iOS 148.2.

Score

CVSS 3.1 4.3 Medium

Status

Analyzed - security@mozilla.org

Published

2026-03-09

Last modified

2026-04-13

Weaknesses

CWE-451

Affected products

• Firefox Focus (Mozilla)
• Focus For Ios (Mozilla)

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1975842
• https://www.mozilla.org/security/advisories/mfsa2026-18/