CVE-2026-2634— Spoofed web content presented under trusted domains using scripted navigation on Firefox iOS
Quick assessment
Affected
Mozilla Firefox 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 for iOS是美国Mozilla基金会的一款针对iOS设备设计的网页浏览器。 Mozilla Firefox for iOS 147.4之前版本存在安全漏洞，该漏洞源于恶意脚本可在收到响应前导致地址栏与Web内容不同步，可能导致攻击者控制的页面在欺骗域名下呈现。
Possible ATT&CK Techniques 1 AI
T1434
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I. Basic Information for CVE-2026-2634
Vulnerability Information
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Vulnerability Title
Spoofed web content presented under trusted domains using scripted navigation on Firefox iOS
Source: CVE Program / CVE List V5
Vulnerability Description
Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages to be presented under spoofed domains. This vulnerability was fixed in Firefox for iOS 147.4.
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 for iOS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox for iOS是美国Mozilla基金会的一款针对iOS设备设计的网页浏览器。 Mozilla Firefox for iOS 147.4之前版本存在安全漏洞，该漏洞源于恶意脚本可在收到响应前导致地址栏与Web内容不同步，可能导致攻击者控制的页面在欺骗域名下呈现。
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 | Firefox for iOS | 147.4 ~ * | - |
|
II. Public POCs for CVE-2026-2634
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mozilla · 2026-02-24 · 52 CVEs total
| CVE-2026-2772 | Use-after-free in the Audio/Video: Playback component | |
| CVE-2026-2757 | Incorrect boundary conditions in the WebRTC: Audio/Video component | |
| CVE-2026-2758 | Use-after-free in the JavaScript: GC component | |
| CVE-2026-2764 | JIT miscompilation, use-after-free in the JavaScript Engine: JIT component | |
| CVE-2026-2760 | Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component | |
| CVE-2026-2761 | Sandbox escape in the Graphics: WebRender component | |
| CVE-2026-2762 | Integer overflow in the JavaScript: Standard Library component | |
| CVE-2026-2759 | Incorrect boundary conditions in the Graphics: ImageLib component | |
| CVE-2026-2770 | Use-after-free in the DOM: Bindings (WebIDL) component | |
| CVE-2026-2771 | Undefined behavior in the DOM: Core & HTML component | |
| CVE-2026-2769 | Use-after-free in the Storage: IndexedDB component | |
| CVE-2026-2773 | Incorrect boundary conditions in the Web Audio component | |
| CVE-2026-2774 | Integer overflow in the Audio/Video component | |
| CVE-2026-2775 | Mitigation bypass in the DOM: HTML Parser component | |
| CVE-2026-2776 | Sandbox escape due to incorrect boundary conditions in the Telemetry component in External | |
| CVE-2026-2777 | Privilege escalation in the Messaging System component | |
| CVE-2026-2778 | Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component | |
| CVE-2026-2779 | Incorrect boundary conditions in the Networking: JAR component | |
| CVE-2026-2780 | Privilege escalation in the Netmonitor component | |
| CVE-2026-2781 | Integer overflow in the Libraries component in NSS |
Showing top 20 of 52 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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Mitigation bypass in the DOM: Security component
V. Comments for CVE-2026-2634
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