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CVE-2026-16397— Clickjacking issue in the WebExtensions component in Firefox for Android

Quick assessment

Affected
Mozilla Firefox
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是Mozilla基金会开源的一款Web浏览器。 Mozilla Firefox 153之前版本存在处理逻辑错误漏洞，该漏洞源于WebExtensions组件存在点击劫持问题，可能导致攻击者通过用户交互进行点击劫持攻击。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1001.001 · Junk Data

Affected Version Matrix 1

VendorProduct Version RangeStatus
Mozilla Firefox 153≤ * unaffected
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I. Basic Information for CVE-2026-16397

Vulnerability Information
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Vulnerability Title
Clickjacking issue in the WebExtensions component in Firefox for Android
Source: CVE Program / CVE List V5
Vulnerability Description
Clickjacking issue in the WebExtensions component in Firefox for Android. This vulnerability was fixed in Firefox 153.
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 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox是Mozilla基金会开源的一款Web浏览器。 Mozilla Firefox 153之前版本存在处理逻辑错误漏洞，该漏洞源于WebExtensions组件存在点击劫持问题，可能导致攻击者通过用户交互进行点击劫持攻击。
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 153 ~ * -

II. Public POCs for CVE-2026-16397

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III. Intelligence Information for CVE-2026-16397

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Vendor Advisories for CVE-2026-16397 (1)

Same Patch Batch · Mozilla · 2026-07-21 · 64 CVEs total

CVE-2026-16374 Information disclosure in the Framework component in DevTools
CVE-2026-16364 Incorrect boundary conditions in the Audio/Video: Playback component
CVE-2026-16362 Use-after-free in the WebRTC: Audio/Video component
CVE-2026-16352 Sandbox escape due to use-after-free in the Disability Access APIs component
CVE-2026-16363 JIT miscompilation in the JavaScript: WebAssembly component
CVE-2026-16356 Sandbox escape due to use-after-free in the Disability Access APIs component
CVE-2026-16370 Mitigation bypass in the DOM: Networking component
CVE-2026-16371 Privilege escalation in the DOM: Navigation component
CVE-2026-16372 Privilege escalation in the DOM: Content Processes component
CVE-2026-16373 Information disclosure in the Privacy component in Firefox for Android
CVE-2026-16357 Incorrect boundary conditions in the Graphics component
CVE-2026-16375 Site isolation issue in the Networking: HTTP component
CVE-2026-16376 Denial-of-service in the Graphics: WebGPU component
CVE-2026-16377 Mitigation bypass in the PDF Viewer component
CVE-2026-16378 Other issue in the DOM: Copy & Paste and Drag & Drop component
CVE-2026-16379 Privilege escalation in the DOM: Content Processes component
CVE-2026-16358 Site isolation issue in the Graphics: WebRender component
CVE-2026-16381 Same-origin policy bypass in the Networking: DNS component
CVE-2026-16380 Mitigation bypass in the Networking component
CVE-2026-16382 Mitigation bypass in the DOM: Service Workers component

Showing top 20 of 64 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2026-16397

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