CVE-2026-34777
CVE-2026-34777 · Electron: Incorrect origin passed to permission request handler for iframe requests
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 38.8.6, 39.8.1, 40.8.1, and 41.0.0, when an iframe requests fullscreen, pointerLock, keyboardLock, openExternal, or media permissions, the origin passed to session.setPermissionRequestHandler() was the top-level page's origin rather than the requesting iframe's origin. Apps that grant permissions based on the origin parameter or webContents.getURL() may inadvertently grant permissions to embedded third-party content. The correct requesting URL remains available via details.requestingUrl. Apps that already check details.requestingUrl are not affected. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0.
CVSS 5.4 · Medium · EPSS 0.1% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
electron
- Versions
- < 38.8.6: Affected
- >= 39.0.0-alpha.1, < 39.8.1: Affected
- >= 40.0.0-alpha.1, < 40.8.1: Affected
- >= 41.0.0-alpha.1, < 41.0.0: Affected
No fix published
electron npm
- Affected ranges
- SEMVER: < 38.8.6
Update to 38.8.6
electron npm
- Affected ranges
- SEMVER: ≥ 39.0.0-alpha.1, < 39.8.1
Update to 39.8.1
electron npm
- Affected ranges
- SEMVER: ≥ 40.0.0-alpha.1, < 40.8.1
Update to 40.8.1
electron npm
- Affected ranges
- SEMVER: ≥ 41.0.0-alpha.1, < 41.0.0
Update to 41.0.0