GHSA-9pf5-hg6p-4pwp Electron: Permission Check Handler Receives Main Frame Origin Instead of Requesting Iframe Origin

• npm electron: < 39.8.7 → fixed in 39.8.7 • npm electron: >= 40.0.0-alpha.1, < 40.9.0 → fixed in 40.9.0 • npm electron: >= 41.0.0-alpha.1, < 41.2.0 → fixed in 41.2.0 • npm electron: >= 42.0.0-alpha.1, < 42.0.0-beta.1 → fixed in 42.0.0-beta.1

Impact For serial-port and media (camera / microphone) permission checks made from an iframe, the `requestingOrigin` passed to `session.setPermissionCheckHandler` was the top-level frame's origin rather than the requesting frame's. Origin-based handler logic could therefore grant a cross-origin iframe device access intended only for the top-level origin. Apps are only affected if they use `setPermissionCheckHandler` with origin-based logic and embed cross-origin iframes with delegated device permissions. Apps that base the decision on `details.securityOrigin`, or that do not embed such iframes, are not affected. Workarounds Check `details.securityOrigin` instead of `requestingOrigin` for these permissions, or do not delegate device permissions to untrusted iframes. Fixed Versions • `42.0.0-beta.1` • `41.2.0` • `40.9.0` • `39.8.7` For more information If you have any questions or comments about this advisory, email Electron at [email protected]