Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-8961— Spoofing issue in the Form Autofill component

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等都是美国Mozilla基金会的产品。Mozilla Firefox是一款开源Web浏览器。Mozilla Firefox ESR是Firefox(Web浏览器)的一个延长支持版本。Mozilla Thunderbird是一套从Mozilla Application Suite独立出来的电子邮件客户端软件。 Mozilla多款产品存在安全漏洞，该漏洞源于Form Autofill组件存在欺骗问题。以下产品及版本受到影响：Firefox 151之前版本、Firefox ESR

AI Predicted 4.3 Difficulty: Moderate EPSS 0.32% · P25

Affected Version Matrix 4

VendorProduct Version RangeStatus
Mozilla Firefox 140.11≤ 140.* unaffected
151≤ * unaffected
Mozilla Thunderbird 140.11≤ 140.* unaffected
151≤ * unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-8961

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Spoofing issue in the Form Autofill component
Source: CVE Program / CVE List V5
Vulnerability Description
Spoofing issue in the Form Autofill component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
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多款产品 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox等都是美国Mozilla基金会的产品。Mozilla Firefox是一款开源Web浏览器。Mozilla Firefox ESR是Firefox(Web浏览器)的一个延长支持版本。Mozilla Thunderbird是一套从Mozilla Application Suite独立出来的电子邮件客户端软件。 Mozilla多款产品存在安全漏洞，该漏洞源于Form Autofill组件存在欺骗问题。以下产品及版本受到影响：Firefox 151之前版本、Firefox ESR
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 140.11 ~ 140.* -
Mozilla Thunderbird 140.11 ~ 140.* -

II. Public POCs for CVE-2026-8961

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-8961

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-8961 (4)

Same Patch Batch · Mozilla · 2026-05-19 · 32 CVEs total

CVE-2026-8960 Spoofing issue in WebExtensions
CVE-2026-8706 Sensitive user data could be leaked to other applications through Reader mode
CVE-2026-8975 Memory safety bugs fixed in Firefox ESR 115.36, Firefox ESR 140.11 and Firefox 151
CVE-2026-8974 Memory safety bugs fixed in Firefox ESR 140.11 and Firefox 151
CVE-2026-8973 Memory safety bugs fixed in Firefox 151
CVE-2026-8972 Privilege escalation in the WebRTC: Audio/Video component
CVE-2026-8971 Same-origin policy bypass in the Networking: JAR component
CVE-2026-8970 Privilege escalation in the Security component
CVE-2026-8969 Mitigation bypass in the DOM: Security component
CVE-2026-8968 Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component
CVE-2026-8967 Information disclosure in the Graphics: WebGPU component
CVE-2026-8966 Information disclosure in the IP Protection component
CVE-2026-8965 Information disclosure in the DOM: Security component
CVE-2026-8964 Spoofing issue in the Popup Blocker component
CVE-2026-8963 Spoofing issue in the Web Speech component
CVE-2026-8962 Mitigation bypass in the DOM: Security component
CVE-2026-8945 Sandbox escape in Firefox and Firefox Focus for Android
CVE-2026-8959 Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component
CVE-2026-8958 Information disclosure, sandbox escape in the Security: Process Sandboxing component
CVE-2026-8957 Privilege escalation in the Enterprise Policies component

Showing top 20 of 32 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2026-8961

No comments yet

Leave a comment