CVE-2026-70605

Electron: HTTP redirect followed into local file loader

MEDIUM

5.9

CVSS Score

Published: August 5, 2026 at 04:04 PM UTC

Updated: October 8, 2026 at 01:53 PM UTC

2 products affected across 2 vendorsElectronElectron

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Severity

MEDIUM5.9

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Electron · Electronjsnpm

95%

v < 39.8.840.0.0 ≤ v < 40.9.041.0.0 ≤ v < 41.2.1*42.0.0 42.0.0 alpha1 42.0.0 alpha2 42.0.0 alpha3 42.0.0 alpha4 42.0.0 alpha5 42.0.0 alpha6 42.0.0 beta1 42.0.0 beta2

Affected range stops below 39.8.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 40.9.0, so it looks safe — our inference, not a vendor statement

Affected range stops below 41.2.1, so it looks safe — our inference, not a vendor statement

Electron · Electron

90%

v < 39.8.8>= 40.0.0-alpha.1, < 40.9.0>= 41.0.0-alpha.1, < 41.2.1>= 42.0.0-alpha.1, < 42.0.0-beta.3

Affected range stops below 39.8.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 40.9.0, so it looks safe — our inference, not a vendor statement

Affected range stops below 41.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 42.0.0-beta.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://github.com/electron/electron/security/advisories/GHSA-v64r-4m7r-3mvq

References (1)

x_refsource_CONFIRMVendor Advisory

Source: cverecord

https://github.com/electron/electron/security/advisories/GHSA-v64r-4m7r-3mvq

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.9MEDIUMGitHub_M

Attack Vector: NETWORK
Complexity: HIGH
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-918

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