CVE-2026-11799

UXSS in Focus for iOS / Klar Webkit navigation. This vulnerability was fixed in Focus for iOS 151.3.1 and Klar for iOS 151.3.1.

Score

CVSS 3.1 7.5 High

Status

Analyzed - security@mozilla.org

Published

2026-06-09

Last modified

2026-06-10

Weaknesses

CWE-79

Affected products

• Focus (Mozilla)
• Focus For Ios (Mozilla)
• Klar (Mozilla)
• Klar For Ios (Mozilla)

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1975667
• https://www.mozilla.org/security/advisories/mfsa2026-55/