Cross-site scripting in Focus for iOS - CVE-2026-11799
Published: June 15, 2026
Vulnerability identifier: #VU134514
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2026-11799
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Focus for iOS
Focus for iOS
Detailed vulnerability description
The vulnerability allows a remote attacker to perform universal cross-site scripting.
The vulnerability exists due to improper neutralization of input during web page generation in WebKit navigation when visiting a specially crafted website or URL. A remote attacker can cause the browser to navigate to crafted content to perform universal cross-site scripting.
User interaction is required to visit a specially crafted website or open a specially crafted URL.
How to mitigate CVE-2026-11799
Install security update from vendor's website.