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Untriaged
Permalink CVE-2026-34776
5.3 MEDIUM
  • CVSS version: 3.1
  • Attack vector (AV): LOCAL
  • Attack complexity (AC): HIGH
  • Privileges required (PR): LOW
  • User interaction (UI): NONE
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): HIGH
  • Integrity impact (I): NONE
  • Availability impact (A): LOW
created 1 week, 1 day ago
Electron: Out-of-bounds read in second-instance IPC on macOS and Linux

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, on macOS and Linux, apps that call app.requestSingleInstanceLock() were vulnerable to an out-of-bounds heap read when parsing a crafted second-instance message. Leaked memory could be delivered to the app's second-instance event handler. This issue is limited to processes running as the same user as the Electron app. Apps that do not call app.requestSingleInstanceLock() are not affected. Windows is not affected by this issue. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0.

Affected products

electron
  • ==>= 41.0.0-alpha.1, < 41.0.0
  • ==>= 40.0.0-alpha.1, < 40.8.1
  • ==>= 39.0.0-alpha.1, < 39.8.1
  • ==< 38.8.6

Matching in nixpkgs

pkgs.electron_35

Cross platform desktop application shell

pkgs.electron_36

Cross platform desktop application shell

pkgs.gfn-electron

Linux Desktop client for Nvidia's GeForce NOW game streaming service

pkgs.electron-mail

ElectronMail is an Electron-based unofficial desktop client for ProtonMail