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Untriaged
Permalink CVE-2026-70602
6.6 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Privileges Required (PR): High (H)
  • User Interaction (UI): None (N)
  • Scope (S): Changed (C)
  • Confidentiality (C): High (H)
  • Integrity (I): Low (L)
  • Availability (A): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Privileges Required (MPR): High (H)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): High (H)
  • Modified Scope (MS): Changed (C)
  • Modified Integrity (MI): Low (L)
  • Modified Availability (MA): None (N)
created 2 weeks, 3 days ago Activity log
  • Created suggestion 2 weeks, 3 days ago
Electron: Extension tab APIs operate across session boundaries

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, extension tab and scripting APIs were not scoped to the extension's own session. A malicious or compromised extension loaded into one session could navigate, script, and read from windows belonging to a different session. Apps are only affected if they load Chrome extensions via session.loadExtension and rely on separate sessions to isolate that extension from other content. This issue is fixed in versions 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.

Affected products

electron
  • ==>= 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
  • ==< 39.8.8

Matching in nixpkgs

pkgs.electron_43

Cross platform desktop application shell

  • nixos-unstable -
  • nixos-26.05 -

pkgs.electron_43-bin

Cross platform desktop application shell

  • nixos-unstable -
  • nixos-26.05 -