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CVE-2026-6779— Other issue in the JavaScript Engine component

AI Predicted 8.1 Difficulty: Easy EPSS 0.21% · P11

Affected Version Matrix 2

VendorProductVersion RangeStatus
MozillaFirefox150≤ *unaffected
MozillaThunderbird150≤ *unaffected
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I. Basic Information for CVE-2026-6779

Vulnerability Information
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Vulnerability Title
Other issue in the JavaScript Engine component
Source: NVD (National Vulnerability Database)
Vulnerability Description
Other issue in the JavaScript Engine 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 Engine组件问
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-2026-6779

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III. Intelligence Information for CVE-2026-6779

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Vendor Advisories for CVE-2026-6779 (2)

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

CVE-2026-6777Other issue in the Networking: DNS component
CVE-2026-6766Incorrect boundary conditions in the Libraries component in NSS
CVE-2026-6768Mitigation bypass in the Networking: Cookies component
CVE-2026-6769Privilege escalation in the Debugger component
CVE-2026-6770Other issue in the Storage: IndexedDB component
CVE-2026-6771Mitigation bypass in the DOM: Security component
CVE-2026-6772Incorrect boundary conditions in the Libraries component in NSS
CVE-2026-6773Denial-of-service due to integer overflow in the Graphics: WebGPU component
CVE-2026-6774Mitigation bypass in the DOM: Security component
CVE-2026-6775Incorrect boundary conditions in the WebRTC component
CVE-2026-6767Other issue in the Libraries component in NSS
CVE-2026-6776Incorrect boundary conditions in the WebRTC: Networking component
CVE-2026-6778Invalid pointer in the Audio/Video: Playback component
CVE-2026-6780Denial-of-service in the Audio/Video: Playback component
CVE-2026-6781Denial-of-service in the Audio/Video: Playback component
CVE-2026-6783Incorrect boundary conditions, integer overflow in the Audio/Video: Playback component
CVE-2026-6782Information disclosure in the IP Protection component
CVE-2026-6784Memory safety bugs fixed in Firefox 150 and Thunderbird 150
CVE-2026-6785Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10
CVE-2026-6786Memory safety bugs fixed in Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Th

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

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2026-6779

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