CVE-2026-8090— Use-after-free in the DOM: Networking component
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I. Basic Information for CVE-2026-8090
Vulnerability Information
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Vulnerability Title
Use-after-free in the DOM: Networking component
Source: NVD (National Vulnerability Database)
Vulnerability Description
Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2.
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 资源管理错误漏洞
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和Mozilla Firefox ESR存在资源管理错误漏洞，该漏洞源于DOM网络组件中的释放后重用问题。
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 | 115.35.2 ~ 115.* | - | |
| Mozilla | Thunderbird | 140.10.2 ~ 140.* | - |
II. Public POCs for CVE-2026-8090
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mozilla · 2026-05-07 · 5 CVEs total
| 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 Thunderbird 150.0.2 | |
| CVE-2026-8091 | Incorrect boundary conditions in the Audio/Video: Playback component |
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-2026-7321
Sandbox escape due to incorrect boundary conditions in the W
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-2026-7321
Sandbox escape due to incorrect boundary conditions in the W
V. Comments for CVE-2026-8090
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