CVE-2026-11799— UXSS in Focus for iOS / Klar Webkit navigation
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Mozilla | Focus for iOS | 151.3.1≤ * | unaffected |
| Mozilla | Klar for iOS | 151.3.1≤ * | unaffected |
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I. Basic Information for CVE-2026-11799
Vulnerability Information
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Vulnerability Title
UXSS in Focus for iOS / Klar Webkit navigation
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Mozilla Focus for iOS和Mozilla Klar for iOS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Focus for iOS和Mozilla Klar for iOS都是美国Mozilla基金会的一款注重隐私保护的移动网页浏览器。 Mozilla Focus for iOS 151.3.1之前版本和Mozilla Klar for iOS 151.3.1之前版本存在安全漏洞，该漏洞源于WebKit导航中的通用跨站脚本问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Mozilla | Focus for iOS | 151.3.1 ~ * | - | |
| Mozilla | Klar for iOS | 151.3.1 ~ * | - |
II. Public POCs for CVE-2026-11799
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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Vendor Advisories for CVE-2026-11799 (1)
IV. Related Vulnerabilities
Same product: Focus for iOS
- CVE-2026-2919
Attacker-controlled content shown under spoofed domains in F - CVE-2025-10290
Opening links via the contextual menu in Focus for iOS would - CVE-2025-55033
Drag and drop gestures in Focus for iOS could allow JavaScri - CVE-2025-55032
Focus incorrectly ignores Content-Disposition headers for so - CVE-2024-10474
Mozilla Focus 安全漏洞
Same vendor: Mozilla
- CVE-2026-74989
Internally found bugs fixed in Thunderbird 154 - CVE-2026-74988
Internally found bugs fixed in Thunderbird ESR 153.1 and Thu - CVE-2026-74984
Race condition in the JavaScript Engine component - CVE-2026-74985
Privilege escalation in the Enterprise Policies component - CVE-2026-74982
Denial-of-service in the Widget component
V. Comments for CVE-2026-11799
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