Bug 2454998 (CVE-2026-34766)

Summary: CVE-2026-34766 Electron: Electron: Unauthorized USB device access via select-usb-device event callback validation bypass
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: low    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Electron. An attacker could influence an application's handler for the `select-usb-device` event to select a USB device ID outside of the filtered list. This could grant access to a USB device that was not intended by the application's security filters, potentially leading to unintended device interactions. The practical impact is limited to applications with unusual device-selection logic.
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Bug Depends On: 2455456, 2455457    
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Description OSIDB Bzimport 2026-04-04 00:01:28 UTC 
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.