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CVE-2026-34766 electron CVE debrief

The Electron framework, used for building cross-platform desktop applications, had a security vulnerability. An issue was found in the select-usb-device event callback where it did not validate the chosen device ID against the filtered list presented to the handler. This could allow an app to gain access to a device that did not match the renderer's requested filters or was listed in exclusionFilters. However, the WebUSB security blocklist remained enforced, 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.

Vendor
electron
Product
Unknown
CVSS
LOW 3.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-04
Original CVE updated
2026-07-24
Advisory published
2026-04-04
Advisory updated
2026-07-24

Who should care

Developers using the Electron framework, especially those whose applications handle USB device selection, should be aware of this vulnerability. Ensuring that the Electron framework is updated to versions 38.8.6, 39.8.0, 40.7.0, or 41.0.0-beta.8 and above is crucial. Additionally, security teams and vulnerability management teams should review the device-selection logic in applications to ensure it aligns with the filtered list.

Technical summary

The vulnerability in Electron's select-usb-device event callback allowed for the selection of a device ID outside the filtered set presented to the handler. This could potentially grant access to unauthorized devices. The issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8 of Electron. The practical impact is limited to apps with unusual device-selection logic. To address this, developers should ensure that their applications validate device IDs against the filtered list and update Electron to the patched versions. Additionally, security teams should review device-selection logic in applications to ensure it aligns with the filtered list and monitor for updates from Electron regarding this vulnerability.

Defensive priority

Medium

Recommended defensive actions

  • Update Electron to version 38.8.6, 39.8.0, 40.7.0, or 41.0.0-beta.8 and above.
  • Review device-selection logic in applications to ensure it aligns with the filtered list.
  • Monitor for updates from Electron regarding this vulnerability.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record was published on 2026-04-04T00:16:17.140Z and was last modified on 2026-07-24T22:10:00.140Z. The NVD entry is currently Analyzed. This issue is limited to apps with unusual device-selection logic. Electron versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8 have patched this vulnerability. The WebUSB security blocklist remained enforced, so security-sensitive devices on the blocklist were not affected.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-04T00:16:17.140Z and has not been modified since then. The NVD entry is currently Analyzed.