Description
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.
References (2)
Core 2
Core References
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1975842
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-18/
Scores
CVSS v3
4.3
EPSS
0.0018
EPSS Percentile
8.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-451
Status
published
Products (3)
mozilla/firefox_focus
< 148.2
Mozilla/Focus for iOS
148.2
Mozilla/Focus for iOS
unspecified - 148.2
Published
Mar 09, 2026
Tracked Since
Mar 09, 2026