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CVE-2026-34773GHSA-MWMH-MQ4G-G6GR

Electron: Registry key path injection in app.setAsDefaultProtocolClient on Windows

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 38.8.6, 39.8.1, 40.8.1, 41.0.0
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 versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, on Windows, app.setAsDefaultProtocolClient(protocol) did not validate the protocol name before writing to the registry. Apps that pass untrusted input as the protocol name may allow an attacker to write to arbitrary subkeys under HKCU\Software\Classes\, potentially hijacking existing protocol handlers. Apps are only affected if they call app.setAsDefaultProtocolClient() with a protocol name derived from external or untrusted input. Apps that use a hardcoded protocol name are not affected. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0.

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 38.8.6; From 39.0.0-alpha.1 · fixed in 39.8.1; From 40.0.0-alpha.1 · fixed in 40.8.1; From 41.0.0-alpha.1 · fixed in 41.0.0

  • electronnpm

    fixed in 38.8.6

  • electronnpm

    From 39.0.0-alpha.1 · fixed in 39.8.1

  • electronnpm

    From 40.0.0-alpha.1 · fixed in 40.8.1

  • electronnpm

    From 41.0.0-alpha.1 · fixed in 41.0.0

References 1

GitHub · electron/electron