CVE-2026-0885— Use-after-free in the JavaScript: GC component
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I. Basic Information for CVE-2026-0885
Vulnerability Information
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Vulnerability Title
Use-after-free in the JavaScript: GC component
Source: NVD (National Vulnerability Database)
Vulnerability Description
Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
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 Firefox ESR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox和Mozilla Firefox ESR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 Firefox 147之前版本和Mozilla Firefox ESR 140.7之前版本存在安全漏洞，该漏洞源于JavaScript GC组件存在释放后重用。
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 | 140.7 ~ 140.* | - | |
| Mozilla | Thunderbird | 140.7 ~ 140.* | - |
II. Public POCs for CVE-2026-0885
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mozilla · 2026-01-13 · 16 CVEs total
| CVE-2026-0877 | Mitigation bypass in the DOM: Security component | |
| CVE-2026-0878 | Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component | |
| CVE-2026-0879 | Sandbox escape due to incorrect boundary conditions in the Graphics component | |
| CVE-2026-0881 | Sandbox escape in the Messaging System component | |
| CVE-2026-0880 | Sandbox escape due to integer overflow in the Graphics component | |
| CVE-2026-0883 | Information disclosure in the Networking component | |
| CVE-2026-0882 | Use-after-free in the IPC component | |
| CVE-2026-0886 | Incorrect boundary conditions in the Graphics component | |
| CVE-2026-0884 | Use-after-free in the JavaScript Engine component | |
| CVE-2026-0887 | Clickjacking issue, information disclosure in the PDF Viewer component | |
| CVE-2026-0888 | Information disclosure in the XML component | |
| CVE-2026-0890 | Spoofing issue in the DOM: Copy & Paste and Drag & Drop component | |
| CVE-2026-0889 | Denial-of-service in the DOM: Service Workers component | |
| CVE-2026-0891 | Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thun | |
| CVE-2026-0892 | Memory safety bugs fixed in Firefox 147 and Thunderbird 147 |
IV. Related Vulnerabilities
Same product: Firefox
- CVE-2026-8093
Memory safety bugs fixed in Thunderbird 150.0.2 - CVE-2026-8094
Other issue in the WebRTC component - CVE-2026-8092
Memory safety bugs fixed in Thunderbird ESR 140.10.2 and Thu - CVE-2026-8091
Incorrect boundary conditions in the Audio/Video: Playback c - CVE-2026-8090
Use-after-free in the DOM: Networking component
Same vendor: Mozilla
- CVE-2026-8093
Memory safety bugs fixed in Thunderbird 150.0.2 - CVE-2026-8094
Other issue in the WebRTC component - CVE-2026-8092
Memory safety bugs fixed in Thunderbird ESR 140.10.2 and Thu - CVE-2026-8091
Incorrect boundary conditions in the Audio/Video: Playback c - CVE-2026-8090
Use-after-free in the DOM: Networking component
V. Comments for CVE-2026-0885
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