What’s Vulnerable › Vulnerabilities
CVE-2026-34766: Electron: USB device selection not validated against filtered device list
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-04 · updated 2026-07-24
- Weakness: CWE-862
Description
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.
Affected products
- electron: before 38.8.6; from 39.0.0 before 39.8.0; from 40.0.0 before 40.7.0; 41.0.0-alpha1, 41.0.0-alpha2, 41.0.0-alpha3, 41.0.0-alpha4, 41.0.0-alpha5, 41.0.0-alpha6 (+7) — fixed in 38.8.6, 39.8.0, 40.7.0
How to fix
Upgrade to a fixed version: electron 38.8.6, 39.8.0, 40.7.0. Check the vendor advisory for mitigations.
References
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