CVE-2026-102675: Electron protocol handlers cross-origin read bypass

CVE-2026-102675 · Severity: high · CVSS 7.4 · Published 2026-09-29

Electron's file and HTTP protocol handlers can be exploited to read sensitive data cross-origin when a custom scheme is registered with fetch API support but without CORS protection. An attacker who tricks a user into loading malicious web content in an Electron app can steal data from responses served through unprotected custom protocols, potentially exposing application secrets, configuration, or user information.

Technologies: Electron, electron (npm). Vendors: Electron, npm.

Quick answers

Is CVE-2026-102675 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-102675 being exploited in the wild.
How severe is CVE-2026-102675?
High severity, with a CVSS score of 7.4, published 29 September 2026.
Which products and versions are affected?
Electron < 41.10.6; >= 42.0.0-alpha.1, < 42.9.2; >= 43.0.0-alpha.1, < 43.4.1; >= 44.0.0-alpha.1, < 44.0.0-beta.5, Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5; electron (npm) SEMVER:introduced=0,fixed=41.10.6.
Is there a fix for CVE-2026-102675?
Yes. electron (npm): upgrade to 41.10.6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-102675 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-102675?
Check whether you run Electron or electron (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • electron (npm): upgrade to 41.10.6 or later
    npm install electron@41.10.6

Technical details

An origin validation error in Electron's protocol.registerFileProtocol and protocol.registerHttpProtocol allows cross-origin reads when supportFetchAPI is enabled without corsEnabled set to true. An attacker can perform cross-origin fetch requests from untrusted web content to access responses served through these handlers, bypassing same-origin policy. The vulnerability requires user interaction (loading untrusted content) and affects only apps that register such schemes without proper CORS configuration.

Affected products

  • Electron Electron < 41.10.6; >= 42.0.0-alpha.1, < 42.9.2; >= 43.0.0-alpha.1, < 43.4.1; >= 44.0.0-alpha.1, < 44.0.0-beta.5

Identifiers

  • CVE-2026-102675
  • GHSA-j84w-jfhq-vhvj

Timeline

  • 2026-08-29: disclosed
  • 2026-09-29: patched: Fixed in versions 41.10.6, 42.9.2, 43.4.1, 44.0.0-beta.5

References

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