GHSA-9qh4-3jw8-366w CVE-2026-102676
Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions
- Severity
- 8.3 / 10
- Critical · CVSS 3.1
- Exploit chance (EPSS)
- 0.48%
- Chance of exploitation in the next 30 days. Higher than 41.35% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-1188 Initialization of a Resource with an Insecure Default
- CWE-269 Improper Privilege Management
- Fix
41.10.6- Upgrade electron to this version or later
Description
Impact
A <webview> could enable Node.js integration in its Web Workers even when its embedder had Node.js integration disabled, giving guest content more privilege than the embedder allowed.
Apps are only affected if they enable the <webview> tag and the embedder is unsandboxed. Apps that do not use <webview>, or that keep the embedder sandboxed, are not affected.
Workarounds
Remove nodeIntegrationInWorker from the guest preferences in a will-attach-webview handler, or do not enable the <webview> tag when loading untrusted content.
Fixed Versions
44.0.0-beta.543.4.142.9.241.10.6
For more information
If you have any questions or comments about this advisory, email us at security@electronjs.org
Affected versions
npm
| Package | Vulnerable | Fixed in |
|---|---|---|
| electron | < 41.10.6 |
41.10.6 |
| electron | >= 42.0.0-alpha.1, < 42.9.2 |
42.9.2 |
| electron | >= 43.0.0-alpha.1, < 43.4.1 |
43.4.1 |
| electron | >= 44.0.0-alpha.1, < 44.0.0-beta.5 |
44.0.0-beta.5 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
electron npm → 41.10.6
- npm
npm install electron@41.10.6- yarn
yarn add electron@41.10.6- pnpm
pnpm add electron@41.10.6
Severity breakdown
CVSS 3.1 8.3
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Weakness
CWE-1188: Initialization of a Resource with an Insecure Default
The product initializes or sets a resource with a default that is intended to be changed by the product's installer, administrator, or maintainer, but the default is not secure.
CWE-269: Improper Privilege Management
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
How to prevent it
- Architecture and Design, Operation: Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
- Architecture and Design: Follow the principle of least privilege when assigning access rights to entities in a software system.
- Architecture and Design: Consider following the principle of separation of privilege. Require multiple conditions to be met before permitting access to a system resource.
References
Packages
Other links
- github.com/electron/electron/security/advisories/GHSA-9qh4-3jw8-366w
- github.com/electron/electron/commit/6462a2e1dc4e6adffd3b7d9b9be1474c45dcbbe2
- github.com/electron/electron/commit/9a675aef8822bae4088567822969f900b3a37671
- github.com/electron/electron/commit/b3ae0aab5cf81c2ed03d04df1ae8e69ecfab7886
- github.com/electron/electron/commit/cd34f335c8664613db5b6e61ae51e2e1846233ae
- github.com/electron/electron/releases/tag/v41.10.6
- github.com/electron/electron/releases/tag/v42.9.2
- github.com/electron/electron/releases/tag/v43.4.1
- github.com/electron/electron/releases/tag/v44.0.0-beta.5
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
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| GHSA-j7hp-h8jx-5ppr libwebp: OOB write in BuildHuffmanTable | High Known exploited | Also affects electron |
| GHSA-995f-9x5r-2rcj Heap buffer overflow in GPU | Critical Known exploited | Also affects electron |
| GHSA-jr5w-w6x2-84p9 Electron: Mitigation for compromised eMudhra intermediate certificates | High | Also affects electron |
| GHSA-h3v5-h239-pg29 Electron: Off-screen rendering on macOS trusts GPU-supplied frame geometry | Low | Also affects electron |
| GHSA-3qxv-5xgr-q7w9 Electron: Frame subscription trusts GPU-supplied frame geometry | Low | Also affects electron |
| GHSA-997q-gvvc-jwmx Electron: openExternal permission requests can be attributed to the wrong origin | Medium | Also affects electron |
| GHSA-fw47-9c62-h3vw Electron: HID and USB permission checks can be attributed to the wrong origin | Medium | Also affects electron |
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