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CVE-2026-34777
MEDIUM · CVSS 5.4
EPSS exploitation probability: 0%
Published 2026-04-04T00:16:18.907 · Last modified 2026-06-17T10:39:36.417

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, 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.

Affected products

electronjs — electron

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.