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

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2026-6758— Use-after-free in the JavaScript: WebAssembly component

EPSS 0.05% · P16
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-6758

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Use-after-free in the JavaScript: WebAssembly component
Source: NVD (National Vulnerability Database)
Vulnerability Description
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mozilla Firefox和Mozilla Thunderbird 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox和Mozilla Thunderbird都是美国Mozilla基金会的产品。Mozilla Firefox是一款开源Web浏览器。Mozilla Thunderbird是一套从Mozilla Application Suite独立出来的电子邮件客户端软件。该软件支持IMAP、POP邮件协议以及HTML邮件格式。 Mozilla Firefox 150之前版本和Mozilla Thunderbird 150之前版本存在安全漏洞，该漏洞源于JavaScript: WebAssem
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

VendorProductAffected VersionsCPESubscribe
MozillaFirefox 150 ~ * -
MozillaThunderbird 150 ~ * -

II. Public POCs for CVE-2026-6758

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-6758

Please Login to view more intelligence information

Same Patch Batch · Mozilla · 2026-04-21 · 41 CVEs total

CVE-2026-6755Mitigation bypass in the DOM: postMessage component
CVE-2026-6765Information disclosure in the Form Autofill component
CVE-2026-6764Incorrect boundary conditions in the DOM: Device Interfaces component
CVE-2026-6763Mitigation bypass in the File Handling component
CVE-2026-6762Spoofing issue in the DOM: Core & HTML component
CVE-2026-6761Privilege escalation in the Networking component
CVE-2026-6760Mitigation bypass in the Networking: Cookies component
CVE-2026-6759Use-after-free in the Widget: Cocoa component
CVE-2026-6757Invalid pointer in the JavaScript: WebAssembly component
CVE-2026-6756Mitigation bypass in Firefox for Android
CVE-2026-6766Incorrect boundary conditions in the Libraries component in NSS
CVE-2026-6754Use-after-free in the JavaScript Engine component
CVE-2026-6753Incorrect boundary conditions in the WebRTC component
CVE-2026-6752Incorrect boundary conditions in the WebRTC component
CVE-2026-6751Uninitialized memory in the Audio/Video: Web Codecs component
CVE-2026-6749Information disclosure due to uninitialized memory in the Graphics: Canvas2D component
CVE-2026-6750Privilege escalation in the Graphics: WebRender component
CVE-2026-6748Uninitialized memory in the Audio/Video: Web Codecs component
CVE-2026-6747Use-after-free in the WebRTC component
CVE-2026-6746Use-after-free in the DOM: Core & HTML component

Showing top 20 of 41 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2026-6758

No comments yet

Leave a comment