CVE-2026-102676 · GHSA-9qh4-3jw8-366w
Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions
- Risk score
- 82/100
- CVSS
- 9.8 v3.1
- Exploit chance (30 days)
- 0.5%
- Published
- 29 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5, an Electron <webview> guest could enable nodeIntegrationInWorker for its Web Workers even when the unsandboxed embedder had Node.js integration disabled, allowing…
- Affected
- electron (npm) < 41.10.6; electron (npm) >= 42.0.0-alpha.1, < 42.9.2; electron (npm) >= 43.0.0-alpha.1, < 43.4.1; electron (npm) >= 44.0.0-alpha.1, < 44.0.0-beta.5
- Fix
- Upgrade electron to 41.10.6 or 42.9.2 or 43.4.1 or 44.0.0-beta.5 (whichever matches your release line) or later.
- Exploitation
- No known exploitation
Story map
At a glance
electron: Red, act today. Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5, an Electron <webview> guest could enable nodeIntegrationInWorker for its Web Workers even when the unsandboxed embedder had Node.js integration disabled, allowing…
The flaws
- CVE-2026-102676: Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions (CVSS 9.8 · EPSS 0%)
- CVE-2026-102677: Electron: Sandboxed preload code cache can be poisoned by a compromised renderer (CVSS 8.8 · EPSS 0%)
- CVE-2026-102674: Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions (CVSS 6.1 · EPSS 0%)
- CVE-2026-102673: Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab (CVSS 6.1 · EPSS 0%)
The fix
Upgrade electron: 41.10.6 · 42.9.2 · 43.4.1 · 44.0.0 · 42.10.0 · 43.5.0 or later on your release line
Who is exposed: electron (npm) < 41.10.6; electron (npm) >= 42.0.0-alpha.1, < 42.9.2; electron (npm) >= 43.0.0-alpha.1, < 43.4.1; electron (npm) >= 44.0.0-alpha.1, < 44.0.0-beta.5
Where it stands
- No known exploitation
Connects to
- Same weakness: Privilege escalation (CWE-269). 156 other warnings in 30 days
Why it is Red
- CVSS 9.8 critical
- Remotely exploitable without logging in
- On your watchlist: node.js, npm
Affected packages
| Package | Ecosystem | Vulnerable | Fixed in |
|---|---|---|---|
| electron | npm | < 41.10.6 | 41.10.6 |
| electron | npm | >= 42.0.0-alpha.1, < 42.9.2 | 42.9.2 |
| electron | npm | >= 43.0.0-alpha.1, < 43.4.1 | 43.4.1 |
| electron | npm | >= 44.0.0-alpha.1, < 44.0.0-beta.5 | 44.0.0-beta.5 |
References
- https://github.com/advisories/GHSA-9qh4-3jw8-366w
- https://github.com/electron/electron/security/advisories/GHSA-9qh4-3jw8-366w
- https://github.com/electron/electron/commit/6462a2e1dc4e6adffd3b7d9b9be1474c45dcbbe2
- https://github.com/electron/electron/commit/9a675aef8822bae4088567822969f900b3a37671
- https://github.com/electron/electron/commit/b3ae0aab5cf81c2ed03d04df1ae8e69ecfab7886
- https://github.com/electron/electron/commit/cd34f335c8664613db5b6e61ae51e2e1846233ae
- https://github.com/electron/electron/releases/tag/v41.10.6
- https://github.com/electron/electron/releases/tag/v42.9.2
- https://github.com/electron/electron/releases/tag/v43.4.1
- https://github.com/electron/electron/releases/tag/v44.0.0-beta.5
Original description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5, an Electron <webview> guest could enable nodeIntegrationInWorker for its Web Workers even when the unsandboxed embedder had Node.js integration disabled, allowing untrusted guest content to create a Node-enabled worker with more privilege than the embedder granted. Applications that do not enable the <webview> tag or that keep the embedder sandboxed are not affected. This issue is fixed in versions 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5.
Last activity 29 Sep 2026. Patch Forecast updates every hour.