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CVE-2026-114121

CVE-2026-114121 · Electron: openExternal permission requests can be attributed to the wrong origin

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 42.11.3, 43.7.0, 44.3.0, and 45.0.0-alpha.5, requests to open external protocol URLs could be attributed to a document other than the one that initiated them, causing the requestingUrl passed to session.setPermissionRequestHandler to identify trusted content for a launch requested by untrusted content. An application that grants openExternal based on the requesting origin and allows untrusted content to open or navigate windows could therefore allow that content to launch an OS-registered external application. This issue is fixed in versions 42.11.3, 43.7.0, 44.3.0, and 45.0.0-alpha.5.

CVSS 5.4 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • electron

    Versions
    • < 42.11.3: Affected
    • >= 43.0.0-alpha.1, < 43.7.0: Affected
    • >= 44.0.0-alpha.1, < 44.3.0: Affected
    • >= 45.0.0-alpha.1, < 45.0.0-alpha.5: Affected

    No fix published

  • electron npm

    Affected ranges
    • SEMVER: < 42.11.3

    Update to 42.11.3

  • electron npm

    Affected ranges
    • SEMVER: ≥ 43.0.0-alpha.1, < 43.7.0

    Update to 43.7.0

  • electron npm

    Affected ranges
    • SEMVER: ≥ 44.0.0-alpha.1, < 44.3.0

    Update to 44.3.0

  • electron npm

    Affected ranges
    • SEMVER: ≥ 45.0.0-alpha.1, < 45.0.0-alpha.5

    Update to 45.0.0-alpha.5

Original sources

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