Electron: HTTP redirect followed into local file loader
Priority LOW 26CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-918 and the CVSS impact.
Summary
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, when following HTTP redirects, net.fetch() and net.request() did not restrict which schemes a redirect could target. A remote server could redirect a request to a local resource, and if the app returns or forwards the response body, local file contents could be disclosed. Apps are only affected if they make net requests to attacker-influenced URLs with redirects followed and expose the response body. This issue is fixed in versions 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00315 24th percentileScored 2026-11-07
Fix Fixed electron (electron): 39.8.8, 40.9.0, 41.2.1 +1electron (npm): 39.8.8, 40.9.1, 41.2.1 +1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| electron | electron | before 39.8.8; 40.0.0-alpha.1 to before 40.9.0; 41.0.0-alpha.1 to before 41.2.1; 42.0.0-alpha.1 to before 42.0.0-beta.3 | 39.8.8, 40.9.0, 41.2.1, 42.0.0-beta.3 | Patch available | CNA |
| — | electron (npm) | before 39.8.8 | 39.8.8 | Patch available | GHSA-v64r-4m7r-3mvq |
| — | electron (npm) | 40.0.0-alpha.1 to before 40.9.1 | 40.9.1 | Patch available | GHSA-v64r-4m7r-3mvq |
| — | electron (npm) | 41.0.0-alpha.1 to before 41.2.1 | 41.2.1 | Patch available | GHSA-v64r-4m7r-3mvq |
| — | electron (npm) | 42.0.0-alpha.1 to before 42.0.0-beta.3 | 42.0.0-beta.3 | Patch available | GHSA-v64r-4m7r-3mvq |
- electron Vendorelectron Affected before 39.8.8; 40.0.0-alpha.1 to before 40.9.0; 41.0.0-alpha.1 to before 41.2.1; 42.0.0-alpha.1 to before 42.0.0-beta.3 Fixed in 39.8.8, 40.9.0, 41.2.1, 42.0.0-beta.3 Patch available CNA
- electron (npm) Vendor— Affected before 39.8.8 Fixed in 39.8.8 Patch available GHSA-v64r-4m7r-3mvq
- electron (npm) Vendor— Affected 40.0.0-alpha.1 to before 40.9.1 Fixed in 40.9.1 Patch available GHSA-v64r-4m7r-3mvq
- electron (npm) Vendor— Affected 41.0.0-alpha.1 to before 41.2.1 Fixed in 41.2.1 Patch available GHSA-v64r-4m7r-3mvq
- electron (npm) Vendor— Affected 42.0.0-alpha.1 to before 42.0.0-beta.3 Fixed in 42.0.0-beta.3 Patch available GHSA-v64r-4m7r-3mvq
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* | before 39.8.8; 40.0.0 to before 40.9.0; 41.0.0 to before 41.2.1 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:42.0.0:alpha1:*:*:*:node.js:*:* | 42.0.0 alpha1 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:42.0.0:alpha2:*:*:*:node.js:*:* | 42.0.0 alpha2 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:42.0.0:alpha3:*:*:*:node.js:*:* | 42.0.0 alpha3 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:42.0.0:alpha4:*:*:*:node.js:*:* | 42.0.0 alpha4 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:42.0.0:alpha5:*:*:*:node.js:*:* | 42.0.0 alpha5 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:42.0.0:alpha6:*:*:*:node.js:*:* | 42.0.0 alpha6 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:42.0.0:beta1:*:*:*:node.js:*:* | 42.0.0 beta1 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:42.0.0:beta2:*:*:*:node.js:*:* | 42.0.0 beta2 | Vulnerable | Electronjs |
- cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* Versions before 39.8.8; 40.0.0 to before 40.9.0; 41.0.0 to before 41.2.1 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:42.0.0:alpha1:*:*:*:node.js:*:* Versions 42.0.0 alpha1 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:42.0.0:alpha2:*:*:*:node.js:*:* Versions 42.0.0 alpha2 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:42.0.0:alpha3:*:*:*:node.js:*:* Versions 42.0.0 alpha3 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:42.0.0:alpha4:*:*:*:node.js:*:* Versions 42.0.0 alpha4 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:42.0.0:alpha5:*:*:*:node.js:*:* Versions 42.0.0 alpha5 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:42.0.0:alpha6:*:*:*:node.js:*:* Versions 42.0.0 alpha6 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:42.0.0:beta1:*:*:*:node.js:*:* Versions 42.0.0 beta1 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:42.0.0:beta2:*:*:*:node.js:*:* Versions 42.0.0 beta2 Vulnerable ·Electronjs
Remediation
- Fix · CNA electron (electron) Fixed in 39.8.8, 40.9.0, 41.2.1, 42.0.0-beta.3
- Fix · GHSA-v64r-4m7r-3mvq electron (npm) Fixed in 39.8.8 Advisory →
- Fix · GHSA-v64r-4m7r-3mvq electron (npm) Fixed in 40.9.1 Advisory →
- Fix · GHSA-v64r-4m7r-3mvq electron (npm) Fixed in 41.2.1 Advisory →
- Fix · GHSA-v64r-4m7r-3mvq electron (npm) Fixed in 42.0.0-beta.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-70605
- 2026-10-03 Alias added: GHSA-v64r-4m7r-3mvq
References
More electron vulnerabilities
- TI-2026-39496 Information disclosure in electron-builder CVSS 4.0HIGH 8.2
- TI-2024-26621 Code Signing Bypass on Windows in electron-updater < 6.3.0-alpha.6 CVSS 3.1HIGH 7.5
- TI-2023-09452 Content-Secrity-Policy disabling eval not applied consistently in renderers with sandbox disabled in Electron CVSS 3.1CRITICAL 9.8
- TI-2026-39157 Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow CVSS 4.0CRITICAL 9.3
- TI-2017-09308 GitHub Electron before 1.6.8 allows remote command execution because of a nodeIntegration… CVSS 3.0HIGH 8.1
- TI-2022-11788 Exposure of Resource to Wrong Sphere in Electron CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-70605 · CVE Program
- CVE-2026-70605 · NVD
- FIRST EPSS
- GHSA-v64r-4m7r-3mvq · GitHub Advisory Database · CC BY 4.0
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