UXSS Vulnerability in Focus and Klar for iOS by Mozilla
CVE-2026-11799

7.5HIGH

Key Information:

Vendor: Mozilla
Status: Focus For iOS; Klar For iOS
Vendor: CVE Published:; 9 June 2026

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What is CVE-2026-11799?

false

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

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Affected Version(s)

Focus for iOS 151.3.1

Klar for iOS 151.3.1

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1975667

https://www.mozilla.org/security/advisories/mfsa2026-55/

CVSS V3.1

Score:

7.5

Severity:

HIGH

Confidentiality:

High

Integrity:

None

Availability:

High

Attack Vector:

Network

Attack Complexity:

Low

Privileges Required:

None

User Interaction:

None

Scope:

Unchanged

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Jun 9, 2026
Vulnerability Reserved
Jun 9, 2026

Credit

Renwa Hiwa

CVE-2026-11799 Data

JSON

Mozilla

What is CVE-2026-11799?

Human OS v1.0: Ageing Is an Unpatched Zero-Day Vulnerability.

Affected Version(s)

References

CVSS V3.1

Timeline

Credit

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.