CVE-2026-11799: Vulnerability in Mozilla Focus for iOS
CVE-2026-11799 is a vulnerability involving Universal Cross-Site Scripting (UXSS) in Mozilla Focus for iOS and Klar for iOS related to WebKit navigation. This security issue was addressed and fixed in version 151. 3. 1 of both Focus for iOS and Klar for iOS. The vulnerability has a high impact rating according to the vendor advisory. No known exploits in the wild have been reported. Users are advised to update to the fixed versions to mitigate the risk.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-11799, is a UXSS issue affecting Mozilla Focus for iOS and Klar for iOS browsers, specifically in their WebKit navigation components. The flaw allows cross-site scripting attacks that could potentially be exploited to bypass security restrictions. Mozilla fixed this issue in version 151.3.1 of both products. The vendor advisory classifies the impact as high, but no further technical details or CVSS score are provided. No known active exploitation has been reported.
Potential Impact
The vulnerability enables Universal Cross-Site Scripting (UXSS), which can allow attackers to execute unauthorized scripts in the context of the affected browser, potentially leading to data theft or session hijacking. The vendor rates the impact as high. There are no reports of active exploitation in the wild.
Mitigation Recommendations
A fix is available in Focus for iOS and Klar for iOS version 151.3.1. Users should update to these versions to remediate the vulnerability. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-11799: Vulnerability in Mozilla Focus for iOS
Description
CVE-2026-11799 is a vulnerability involving Universal Cross-Site Scripting (UXSS) in Mozilla Focus for iOS and Klar for iOS related to WebKit navigation. This security issue was addressed and fixed in version 151. 3. 1 of both Focus for iOS and Klar for iOS. The vulnerability has a high impact rating according to the vendor advisory. No known exploits in the wild have been reported. Users are advised to update to the fixed versions to mitigate the risk.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-11799, is a UXSS issue affecting Mozilla Focus for iOS and Klar for iOS browsers, specifically in their WebKit navigation components. The flaw allows cross-site scripting attacks that could potentially be exploited to bypass security restrictions. Mozilla fixed this issue in version 151.3.1 of both products. The vendor advisory classifies the impact as high, but no further technical details or CVSS score are provided. No known active exploitation has been reported.
Potential Impact
The vulnerability enables Universal Cross-Site Scripting (UXSS), which can allow attackers to execute unauthorized scripts in the context of the affected browser, potentially leading to data theft or session hijacking. The vendor rates the impact as high. There are no reports of active exploitation in the wild.
Mitigation Recommendations
A fix is available in Focus for iOS and Klar for iOS version 151.3.1. Users should update to these versions to remediate the vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-06-09T13:59:49.244Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-55/","vendor":"Mozilla"}]
Threat ID: 6a2881578dd33fbd857f8e9b
Added to database: 6/9/2026, 9:10:47 PM
Last enriched: 6/9/2026, 9:42:11 PM
Last updated: 6/10/2026, 6:18:43 AM
Views: 7
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