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CVE-2026-70607

CVE-2026-70607 · Electron: window.open features string controls some window options considered privileged

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 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, some window options supplied by web content in the window.open() features string were applied to the new BrowserWindow without an allowlist. Untrusted content could set window options it should not control, including options that cause the main process to access attacker-chosen file or network paths, when untrusted content can call window.open() and the app does not override child window options via setWindowOpenHandler or overrideBrowserWindowOptions. This issue is fixed in 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.

CVSS 5.3 · Medium · EPSS 0.6% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • electron

    Versions
    • < 39.8.8: Affected
    • >= 40.0.0-alpha.1, < 40.9.0: Affected
    • >= 41.0.0-alpha.1, < 41.2.1: Affected
    • >= 42.0.0-alpha.1, < 42.0.0-beta.3: Affected

    No fix published

  • electron npm

    Affected ranges
    • SEMVER: < 39.8.8

    Update to 39.8.8

  • electron npm

    Affected ranges
    • SEMVER: ≥ 40.0.0-alpha.1, < 40.9.0

    Update to 40.9.0

  • electron npm

    Affected ranges
    • SEMVER: ≥ 41.0.0-alpha.1, < 41.2.1

    Update to 41.2.1

  • electron npm

    Affected ranges
    • SEMVER: ≥ 42.0.0-alpha.1, < 42.0.0-beta.3

    Update to 42.0.0-beta.3

Original sources

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