CVE-2026-34775

criticalpriority · track · 39EPSS 0.004 · 30 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.37% (30th) EPSS

CVSS 9.8 · critical

Is it mine?

12 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-21

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0, the nodeIntegrationInWorker webPreference was not correctly scoped in all configurations. In certain process-sharing scenarios, workers spawned in frames configured with nodeIntegrationInWorker: false could still receive Node.js integration. Apps are only affected if they enable nodeIntegrationInWorker. Apps that do not use nodeIntegrationInWorker are not affected. This issue has been patched in versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.8–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.16.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Nsecondary · ENISA EU

v3.16.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Nsecondary · security-advisories@github.comexploitability 1.6 · impact 5.2

v3.16.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Nsecondary · OSV

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-653USCWE-653US

affected products (12)

Products and version ranges known to be affected.

Electron Electron≤ < 38.8.6enisa_euvdEU
Electron Electron39.0.0-alpha.1, → 39.8.4enisa_euvdEU
Electron Electron40.0.0-alpha.1, → 40.8.4enisa_euvdEU
Electron Electron41.0.0-alpha.1, → 41.0.0enisa_euvdEU
electronjs electron< 38.8.6nvdUScpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:*
electronjs electron39.0.0 → 39.8.4nvdUScpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:*
electronjs electron40.0.0 → 40.8.4nvdUScpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:*
electronjs electron= 41.0.0nvdUScpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:*
npm electron< 38.8.6osvUSpkg:npm/electron
npm electron39.0.0-alpha.1 → 39.8.4osvUSpkg:npm/electron
npm electron40.0.0-alpha.1 → 40.8.4osvUSpkg:npm/electron
npm electron41.0.0-alpha.1 → 41.0.0osvUSpkg:npm/electron

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-xwr5-m59h-vwqrElectron: nodeIntegrationInWorker not correctly scoped in shared renderer processes2026-04-03ghsa · osvUS
### Impact The `nodeIntegrationInWorker` webPreference was not correctly scoped in all configurations. In certain process-sharing scenarios, workers spawned in frames configured with `nodeIntegrationInWorker: false` could still receive Node.js integration. Apps are only affected if they enable `nodeIntegrationInWorker`. Apps that do not use `nodeIntegrationInWorker` are not affected. ### Workarounds Avoid enabling `nodeIntegrationInWorker` in apps that also open child windows or embed content with differing webPreferences. ### Fixed Versions * `41.0.0` * `40.8.4` * `39.8.4` * `38.8.6` ### For more information If there are any questions or comments about this advisory, please email [security@electronjs.org](mailto:security@electronjs.org)

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2026-04-04modified 2026-07-24

references (4)

External citations — patches, advisories, analysis.

scry

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