CVE-2026-34766: Electron USB Device Selection Not Validated Vulnerability
LOWCVE-2026-34766 is a LOW (CVSS 3.3) usb device selection not validated vulnerability (CWE-862: Missing Authorization) affecting Electron libraries in the npm ecosystem. The issue involves usb device selection not validated against filtered device list. Remediation is available by upgrading affected packages to version 38.8.6, 39.8.0, 40.7.0, 41.0.0-beta.8.
CVE-2026-34766 at a Glance
Security Impact
CVSS: 3.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N).
How to Fix CVE-2026-34766
To remediate this vulnerability, upgrade all affected Electron dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install electron@38.8.6npm install electron@39.8.0npm install electron@40.7.0npm install electron@41.0.0-beta.8Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls electronHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2026-34766, inspect your project dependencies using npm:
npm ls electronAnalyze the terminal output to locate any version of Electron in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 38.8.6), your application is affected.
Note: The npm ls electron command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Electron, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-34766 Affected Electron Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
electron
|
npm |
< 38.8.6
|
38.8.6
|
|
electron
|
npm |
≥ 39.0.0-alpha.1
< 39.8.0
|
39.8.0
|
|
electron
|
npm |
≥ 40.0.0-alpha.1
< 40.7.0
|
40.7.0
|
|
electron
|
npm |
≥ 41.0.0-alpha.1
< 41.0.0-beta.8
|
41.0.0-beta.8
|
References
Frequently Asked Questions
What is CVE-2026-34766?
Which Electron versions are affected?
What version fixes CVE-2026-34766?
Is electron affected?
What is the CVSS score of CVE-2026-34766?
What CWE is associated with CVE-2026-34766?
How can I check npm dependencies for CVE-2026-34766?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-9899-m83m-qhpj",
"modified" : "2026-04-06T23:10:26Z",
"published" : "2026-04-03T02:36:52Z",
"aliases" : [ "CVE-2026-34766" ],
"summary" : "Electron: USB device selection not validated against filtered device list",
"details" : "### Impact\nThe `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`.\n\nThe 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.\n\n### Workarounds\nThere are no app side workarounds, you must update to a patched version of Electron.\n\n### Fixed Versions\n* `41.0.0-beta.8`\n* `40.7.0`\n* `39.8.0`\n* `38.8.6`\n\n### For more information\nIf there are any questions or comments about this advisory, send an email to [security@electronjs.org](mailto:security@electronjs.org)",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "electron"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "38.8.6"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "electron"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "39.0.0-alpha.1"
}, {
"fixed" : "39.8.0"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "electron"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "40.0.0-alpha.1"
}, {
"fixed" : "40.7.0"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "electron"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "41.0.0-alpha.1"
}, {
"fixed" : "41.0.0-beta.8"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/electron/electron/security/advisories/GHSA-9899-m83m-qhpj"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-34766"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/electron/electron"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-862" ],
"severity" : "LOW",
"github_reviewed" : true,
"github_reviewed_at" : "2026-04-03T02:36:52Z",
"nvd_published_at" : "2026-04-04T00:16:17Z"
}
}