Critical
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-4076
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 11:29 UTC · Revision 1
Source evidence
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.
osv:CVE-2020-4076
Complete source record
{
"id": "5b6ba54aac96693f248212dd9b25190fda1a2c7df7d626bbf47bb92e9aa77f03",
"url": "https://osv.dev/vulnerability/CVE-2020-4076",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-4076",
"summary": "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.",
"evidence": "osv:CVE-2020-4076",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2020-4076",
"aliases": [
"CVE-2020-4076",
"GHSA-m93v-9qjc-3g79"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/electron/electron",
"type": "GIT",
"events": [
{
"introduced": "3083693e67632720b8d12b32d3811be0f4336318"
},
{
"fixed": "0552e0d5de46ffa3b481d741f1db5c779e201565"
},
{
"introduced": "1af3a71fdbb3130fd581b12d8f5a7440e7a04fc6"
},
{
"fixed": "d8f90444aa654f886016a22cb771df99c3616178"
},
{
"introduced": "4da01641ce50cf5a8b6f39717e4c447f89455dfa"
},
{
"last_affected": "4da01641ce50cf5a8b6f39717e4c447f89455dfa"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.0.0"
},
{
"fixed": "7.2.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.2.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:electronjs:electron:9.0.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "9.0.0-NA"
},
{
"last_affected": "9.0.0-NA"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"9.0.0-NA",
"v9.0.0",
"v7.2.3",
"v8.2.3",
"v8.2.2",
"v7.2.2",
"v8.2.1",
"v7.2.1",
"v8.2.0",
"v7.2.0",
"v8.1.1",
"v8.1.0",
"v8.0.3",
"v7.1.14",
"v8.0.2",
"v7.1.13",
"v8.0.1",
"v7.1.12",
"v8.0.0",
"v7.1.11",
"v7.1.10",
"v7.1.9",
"v7.1.8",
"v7.1.7",
"v7.1.6",
"v7.1.5",
"v7.1.4",
"v7.1.3",
"v7.1.2",
"v7.1.1",
"v7.1.0",
"v7.0.1",
"v7.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-4076.json"
}
}
],
"modified": "2026-10-20T10:54:21.886000609Z",
"provider": "osv",
"references": [
"https://github.com/electron/electron/security/advisories/GHSA-m93v-9qjc-3g79",
"https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:electronjs:electron:9.0.0:beta10:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta11:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta12:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta13:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta14:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta15:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta16:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta17:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta18:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta19:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta1:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta20:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta2:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta3:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta4:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta5:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta6:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta7:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta8:*:*:*:*:*:*",
"cpe:2.3:a:electronjs:electron:9.0.0:beta9:*:*:*:*:*:*"
],
"vendor_product": "electronjs:electron",
"extracted_events": [
{
"range": [
{
"introduced": "9.0.0-beta1"
},
{
"last_affected": "9.0.0-beta1"
},
{
"introduced": "9.0.0-beta10"
},
{
"last_affected": "9.0.0-beta10"
},
{
"introduced": "9.0.0-beta11"
},
{
"last_affected": "9.0.0-beta11"
},
{
"introduced": "9.0.0-beta12"
},
{
"last_affected": "9.0.0-beta12"
},
{
"introduced": "9.0.0-beta13"
},
{
"last_affected": "9.0.0-beta13"
},
{
"introduced": "9.0.0-beta14"
},
{
"last_affected": "9.0.0-beta14"
},
{
"introduced": "9.0.0-beta15"
},
{
"last_affected": "9.0.0-beta15"
},
{
"introduced": "9.0.0-beta16"
},
{
"last_affected": "9.0.0-beta16"
},
{
"introduced": "9.0.0-beta17"
},
{
"last_affected": "9.0.0-beta17"
},
{
"introduced": "9.0.0-beta18"
},
{
"last_affected": "9.0.0-beta18"
},
{
"introduced": "9.0.0-beta19"
},
{
"last_affected": "9.0.0-beta19"
},
{
"introduced": "9.0.0-beta2"
},
{
"last_affected": "9.0.0-beta2"
},
{
"introduced": "9.0.0-beta20"
},
{
"last_affected": "9.0.0-beta20"
},
{
"introduced": "9.0.0-beta3"
},
{
"last_affected": "9.0.0-beta3"
},
{
"introduced": "9.0.0-beta4"
},
{
"last_affected": "9.0.0-beta4"
},
{
"introduced": "9.0.0-beta5"
},
{
"last_affected": "9.0.0-beta5"
},
{
"introduced": "9.0.0-beta6"
},
{
"last_affected": "9.0.0-beta6"
},
{
"introduced": "9.0.0-beta7"
},
{
"last_affected": "9.0.0-beta7"
},
{
"introduced": "9.0.0-beta8"
},
{
"last_affected": "9.0.0-beta8"
},
{
"introduced": "9.0.0-beta9"
},
{
"last_affected": "9.0.0-beta9"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-4076",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 385195,
"published_at": "2020-07-07T00:15:10.59+00:00"
}