CVE-2020-4077— Context isolation bypass via contextBridge in Electron
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I. Basic Information for CVE-2020-4077
Vulnerability Information
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Vulnerability Title
Context isolation bypass via contextBridge in Electron
Source: NVD (National Vulnerability Database)
Vulnerability Description
In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, there is a context isolation bypass. Code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. Apps using both `contextIsolation` and `contextBridge` are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
违背信任边界
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenJS Electron 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenJS Electron是OpenJS基金会的一款用于桌面GUI应用程序开发的开源框架。 OpenJS Electron 7.2.4之前版本、8.2.4之前版本和9.0.0-beta21之前版本中的contextIsolation模块和contextBridge模块存在安全漏洞。攻击者可利用该漏洞执行权限操作。
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
II. Public POCs for CVE-2020-4077
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- https://github.com/electron/electron/security/advisories/GHSA-h9jc-284h-533gx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2020-4077
Same Patch Batch · electron · 2020-07-07 · 4 CVEs total
| CVE-2020-4076 | 7.8 HIGH | Context isolation bypass via leaked cross-context objects in Electron |
| CVE-2020-15096 | 6.8 MEDIUM | Context isolation bypass via Promise in Electron |
| CVE-2020-4075 | 6.8 MEDIUM | Arbitrary file read via window-open IPC in Electron |
IV. Related Vulnerabilities
Same product: electron
- CVE-2026-34781
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Electron named window.open targets not scoped to the opener' - CVE-2026-34764
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Electron: Context Isolation bypass via contextBridge VideoFr - CVE-2026-34779
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Same vendor: electron
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Electron named window.open targets not scoped to the opener' - CVE-2026-34764
Electron has a use-after-free in offscreen shared texture re - CVE-2026-34780
Electron: Context Isolation bypass via contextBridge VideoFr - CVE-2026-34779
Electron: AppleScript injection in app.moveToApplicationsFol
Same weakness: CWE-501
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