GHSA-xwr5-m59h-vwqr CVE-2026-34775
Electron: nodeIntegrationInWorker not correctly scoped in shared renderer processes
- Severity
- 6.8 / 10
- Critical · CVSS 3.1
- Exploit chance (EPSS)
- 0.29%
- Chance of exploitation in the next 30 days. Higher than 22.03% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-653 Improper Isolation or Compartmentalization
- Fix
38.8.6- Upgrade electron to this version or later
Description
Impact
The nodeIntegrationInWorker webPreference was not correctly scoped in all configurations. In certain process-sharing scenarios, workers spawned in frames configured with nodeIntegrationInWorker: false could still receive Node.js integration.
Apps are only affected if they enable nodeIntegrationInWorker. Apps that do not use nodeIntegrationInWorker are not affected.
Workarounds
Avoid enabling nodeIntegrationInWorker in apps that also open child windows or embed content with differing webPreferences.
Fixed Versions
41.0.040.8.439.8.438.8.6
For more information
If there are any questions or comments about this advisory, please email security@electronjs.org
Affected versions
npm
| Package | Vulnerable | Fixed in |
|---|---|---|
| electron | < 38.8.6 |
38.8.6 |
| electron | >= 39.0.0-alpha.1, < 39.8.4 |
39.8.4 |
| electron | >= 40.0.0-alpha.1, < 40.8.4 |
40.8.4 |
| electron | >= 41.0.0-alpha.1, < 41.0.0 |
41.0.0 |
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 → 38.8.6
- npm
npm install electron@38.8.6- yarn
yarn add electron@38.8.6- pnpm
pnpm add electron@38.8.6
Severity breakdown
CVSS 3.1 6.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Weakness
CWE-653: Improper Isolation or Compartmentalization
The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.
How to prevent it
- Architecture and Design: Break up privileges between different modules, objects, or entities. Minimize the interfaces between modules and require strong access control between them.
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-qqvq-6xgj-jw8g Electron affected by libvpx's heap buffer overflow in vp8 encoding | High Known exploited | Also affects electron |
| 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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