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Untriaged
Permalink CVE-2026-34771
7.5 HIGH
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): HIGH
  • Privileges required (PR): NONE
  • User interaction (UI): REQUIRED
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): HIGH
  • Integrity impact (I): HIGH
  • Availability impact (A): HIGH
created 1 week, 6 days ago
Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that register an asynchronous session.setPermissionRequestHandler() may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending, invoking the stored callback dereferences freed memory, which may lead to a crash or memory corruption. Apps that do not set a permission request handler, or whose handler responds synchronously, are not affected. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8.

Affected products

electron
  • ==< 38.8.6
  • ==>= 39.0.0-alpha.1, < 39.8.0
  • ==>= 41.0.0-alpha.1, < 41.0.0-beta.8
  • ==>= 40.0.0-alpha.1, < 40.7.0

Matching in nixpkgs

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