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CVE-2026-2919— Attacker-controlled content shown under spoofed domains in Focus for iOS via stalled navigation and iframe redirect

Quick assessment

Affected
Mozilla Focus for iOS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mozilla Firefox Focus for iOS是美国Mozilla基金会的一款专为iOS设备设计的隐私浏览器。 Mozilla Firefox Focus for iOS 148.2之前版本存在安全漏洞，该漏洞源于恶意脚本可通过欺骗域名显示攻击者控制的Web内容，可能导致UI显示受信任域。

AI Predicted 5.9 Difficulty: Moderate EPSS 0.26% · P16
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I. Basic Information for CVE-2026-2919

Vulnerability Information
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Vulnerability Title
Attacker-controlled content shown under spoofed domains in Focus for iOS via stalled navigation and iframe redirect
Source: CVE Program / CVE List V5
Vulnerability Description
Malicious scripts could display attacker-controlled web content under spoofed domains in Focus for iOS by stalling a _self navigation to an invalid port and triggering an iframe redirect, causing the UI to display a trusted domain without user interaction. This vulnerability was fixed in Focus for iOS 148.2.
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 Firefox Focus for iOS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox Focus for iOS是美国Mozilla基金会的一款专为iOS设备设计的隐私浏览器。 Mozilla Firefox Focus for iOS 148.2之前版本存在安全漏洞，该漏洞源于恶意脚本可通过欺骗域名显示攻击者控制的Web内容，可能导致UI显示受信任域。
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 148.2 ~ * -

II. Public POCs for CVE-2026-2919

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III. Intelligence Information for CVE-2026-2919

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Vendor Advisories for CVE-2026-2919 (1)

IV. Related Vulnerabilities

Same product: Focus for iOS
Same vendor: Mozilla

V. Comments for CVE-2026-2919

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