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CVE-2026-70611 medium CVSS 6.9

OS Command Injection in electron (CVE-2026-70611)

Summary

OS command injection in electron (CVE-2026-70611). Confidential information can be exposed externally. Mitigation: upgrade to 42.0.0-beta.3 or later.

Original description

The description as published by the source.

Impact

The DevTools "reveal in file manager" action could launch the target file rather than reveal it. An attacker with a separate means of running script inside the DevTools frontend (such as a malicious DevTools extension) could use this to execute native code outside the sandbox.

Apps are only affected if DevTools is opened for windows exposed to untrusted content or untrusted DevTools extensions. Apps that do not open DevTools in that context are not affected.

Workarounds

Do not open DevTools for windows that load untrusted content, and do not load untrusted DevTools extensions.

Fixed Versions

  • 42.0.0-beta.3
  • 41.2.1
  • 40.9.2
  • 39.8.9

For more information

If you have any questions or comments about this advisory, email Electron at security@electronjs.org

Source: GitHub Security Advisories (Global) NVD GitHub Advisory

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-2026-70611 has been found in electron.
Confidential information can be exposed externally. CVSS score: 6.9/10.
What to do: upgrade electron to 42.0.0-beta.3 or later.
If unsure, ask your IT team or search "electron CVE-2026-70611" on the vendor's site.

CVE-2026-70611 (electron) — CWE-78 / CVSS v3 6.9
Attack vector: local
Patched: 42.0.0-beta.3 — apply immediately
Workaround: Do not open DevTools for windows that load untrusted content, and do not load untrusted DevTools extensions.
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.

❓ What is the problem

OS command injection (CWE-78) exists in electron.

📍 Affected scope

Check the vendor advisory for the affected versions of electron.

🔥 Severity

Severity: Medium (CVSS 6.9/10). Confidential information can be exposed externally.

🔧 How to fix

Update to 42.0.0-beta.3.

🛡️ Workaround

Workaround: Do not open DevTools for windows that load untrusted content, and do not load untrusted DevTools extensions.

🔍 Detection

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

  1. 1
    Identify 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。

  2. 2
    Apply temporary workaround mitigate 
    Do not open DevTools for windows that load untrusted content, and do not load untrusted DevTools extensions.

    パッチが適用されるまでの応急処置として、Do not open DevTools for windows that load untrusted content, and do not load untrusted DevTools extensions. を実施。回避策の副作用 (機能低下) を確認した上で。

  3. 3
    Apply patch patch 
    Upgrade electron to 42.0.0-beta.3

    ステージング環境で 42.0.0-beta.3 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。

  4. 4
    Post-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

npm electron
[{"type":"SEMVER","events":[{"introduced":"42.0.0-alpha.1"},{"fixed":"42.0.0-beta.3"}]}]

References

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