Vulnerability in electron (CVE-2020-4077)
Summary
Vulnerability in electron (CVE-2020-4077). Successful exploitation can lead to full system takeover. Exploitable via contextIsolation. Mitigation: upgrade to 8.2.4 or later.
Original description
The description as published by the source.
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 both contextIsolation and contextBridge are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2020-4077 has been found in electron.
Attackers can target a specific entry point like contextIsolation over the network to misuse the product.
Successful exploitation can lead to full system takeover.
What to do: upgrade electron to 8.2.4 or later.
If unsure, ask your IT team or search "electron CVE-2020-4077" on the vendor's site.
CVE-2020-4077 (electron) — CWE-501
Attack vector: remote (network-reachable) / no user interaction
Attack surface: contextIsolation / contextBridge
Patched: 8.2.4 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-501) exists in electron. Attackers reach the vulnerable code path via contextIsolation.
Check the vendor advisory for the affected versions of electron. Attack surface: contextIsolation / contextBridge.
Severity: ?. Successful exploitation can lead to full system takeover.
Update to 8.2.4.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'electron' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'electron' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
electronを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade electron to 8.2.4ステージング環境で 8.2.4 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory electronjs.org
- web github.com