CVE-2020-4076

lowpriority · track · 36EPSS 0.004 · 30 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.37% (30th) EPSS

CVSS 3.6 · low

Is it mine?

8 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, there is a context isolation bypass. Code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. Apps using contextIsolation are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.

cvss

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

9.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–critical · 3.6–9

v2.03.6lowAV:L/AC:L/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 4.9

v3.19criticalCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 2.5 · impact 5.8

v3.17.8highCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Nsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Nsecondary · security-advisories@github.comexploitability 1.4 · impact 5.8

v3.17.8highCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Nsecondary · OSV

v3.18.2highCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-501USCWE-501US

affected products (8)

Products and version ranges known to be affected.

Electron Electron≤ < 7.2.4enisa_euvdEU
Electron Electron≤ 9.0.0-beta.0, ≤ 9.0.0-beta.20enisa_euvdEU
Electron Electron8.0.0, → 8.2.4enisa_euvdEU
electronjs electron7.0.0 → 7.2.4nvdUScpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:*
electronjs electron8.0.0 → 8.2.4nvdUScpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:*
electronjs electron= 9.0.0nvdUScpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:*
npm electron< 7.2.4osvUSpkg:npm/electron
npm electron8.0.0 → 8.2.4osvUSpkg:npm/electron

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-m93v-9qjc-3g79Context isolation bypass via leaked cross-context objects in Electron2020-07-07ghsa · osvUS
### Impact Apps using `contextIsolation` are affected. This is a context isolation bypass, meaning that code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. ### Workarounds There are no app-side workarounds, you must update your Electron version to be protected. ### Fixed Versions * `9.0.0-beta.21` * `8.2.4` * `7.2.4` ### Non-Impacted Versions * `9.0.0-beta.*` ### For more information If you have any questions or comments about this advisory: * Email us at [security@electronjs.org](mailto:security@electronjs.org)

also known as (3)

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 2020-07-07modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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