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CVE-2026-70602GHSA-M55F-7GQJ-FR98

Electron: Extension tab APIs operate across session boundaries

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 39.8.8, 40.9.0, 41.2.1, 42.0.0-beta.3
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • electron electron

    fixed in 39.8.8; From 40.0.0-alpha.1 · fixed in 40.9.0; From 41.0.0-alpha.1 · fixed in 41.2.1; From 42.0.0-alpha.1 · fixed in 42.0.0-beta.3

  • electronnpm

    fixed in 39.8.8

  • electronnpm

    From 40.0.0-alpha.1 · fixed in 40.9.0

  • electronnpm

    From 41.0.0-alpha.1 · fixed in 41.2.1

  • electronnpm

    From 42.0.0-alpha.1 · fixed in 42.0.0-beta.3

References 1

GitHub · electron/electron