CVE-2026-34766: Electron: USB device selection not validated against filtered device list
Impact The select-usb-device event callback did not validate the chosen device ID against the filtered list that was presented to the handler. An app whose handler could be influenced to select a device ID outside the filtered set would grant access to a device that did not match the renderer's requested filters or was listed in exclusionFilters.
The WebUSB security blocklist remained enforced regardless, so security-sensitive devices on the blocklist were not affected. The practical impact is limited to apps with unusual device-selection logic.
Workarounds There are no app side workarounds, you must update to a patched version of Electron.
Fixed Versions 41.0.0-beta.8 40.7.0 39.8.0 38.8.6
For more information If there are any questions or comments about this advisory, send an email to security@electronjs.org
Other sources
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, the select-usb-device event callback did not validate the chosen device ID against the filtered list that was presented to the handler. An app whose handler could be influenced to select a device ID outside the filtered set would grant access to a device that did not match the renderer's requested filters or was listed in exclusionFilters. The WebUSB security blocklist remained enforced regardless, so security-sensitive devices on the blocklist were not affected. The practical impact is limited to apps with unusual device-selection logic. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8.
— MITRE
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
npm/electronto a version that resolves this vulnerability.Fixed in 41.0.0-beta.8 - Upgrade
Upgrade
npm/electronto a version that resolves this vulnerability.Fixed in 40.7.0 - Upgrade
Upgrade
npm/electronto a version that resolves this vulnerability.Fixed in 39.8.0 - Upgrade
Upgrade
npm/electronto a version that resolves this vulnerability.Fixed in 38.8.6 - Upgrade
Upgrade
electronto a version that resolves this vulnerability.Fixed in 38.8.6 - Upgrade
Upgrade
electronto a version that resolves this vulnerability.Fixed in 39.8.0 - Upgrade
Upgrade
electronto a version that resolves this vulnerability.Fixed in 40.7.0 - Upgrade
Upgrade
electronto a version that resolves this vulnerability.Fixed in 41.0.0-beta.8