Privilege Escalation in electron (CVE-2026-102676)
Summary
Vulnerability in electron (CVE-2026-102676). Successful exploitation can lead to full system takeover. Exploitable via nodeIntegrationInWorker. Mitigation: upgrade to 44.0.0-beta.5 or later.
Original description
The description as published by the source.
Impact
A `` could enable Node.js integration in its Web Workers even when its embedder had Node.js integration disabled, giving guest content more privilege than the embedder allowed.
Apps are only affected if they enable the tag and the embedder is unsandboxed. Apps that do not use, or that keep the embedder sandboxed, are not affected.
Workarounds
Remove nodeIntegrationInWorker from the guest preferences in a will-attach-webview handler, or do not enable the `` tag when loading untrusted content.
Fixed Versions
44.0.0-beta.543.4.142.9.241.10.6
For more information
If you have any questions or comments about this advisory, email us at security@electronjs.org
Source: NIST National Vulnerability Database 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-2026-102676 has been found in electron.
Attackers can target a specific entry point like nodeIntegrationInWorker over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 8.3/10.
What to do: upgrade electron to 44.0.0-beta.5 or later.
If unsure, ask your IT team or search "electron CVE-2026-102676" on the vendor's site.
CVE-2026-102676 (electron) — CWE-269 / CVSS v3 8.3
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: nodeIntegrationInWorker
Patched: 44.0.0-beta.5 — apply immediately
Workaround: Remove nodeIntegrationInWorker from the guest preferences in a will-attach-webview handler, or do not enable the <webview> tag when loading untrusted content.
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-269) exists in electron. Attackers reach the vulnerable code path via nodeIntegrationInWorker without authentication.
Check the vendor advisory for the affected versions of electron. Attack surface: nodeIntegrationInWorker.
Severity: High (CVSS 8.3/10). Successful exploitation can lead to full system takeover.
Update to 44.0.0-beta.5.
Workaround: Remove nodeIntegrationInWorker from the guest preferences in a will-attach-webview handler, or do not enable the <webview> tag when loading untrusted content.
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
-
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 temporary workaround mitigate
Remove `nodeIntegrationInWorker` from the guest preferences in a `will-attach-webview` handler, or do not enable the `<webview>` tag when loading untrusted content.パッチが適用されるまでの応急処置として、Remove
nodeIntegrationInWorkerfrom the guest preferences in awill-attach-webviewhandler, or do not enable the<webview>tag when loading untrusted content. を実施。回避策の副作用 (機能低下) を確認した上で。 -
3Apply patch patch
Upgrade electron to 44.0.0-beta.5ステージング環境で 44.0.0-beta.5 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。
-
4Post-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
- patch security-advisories@github.com
- patch security-advisories@github.com
- patch security-advisories@github.com
- patch security-advisories@github.com
- patch security-advisories@github.com
- web security-advisories@github.com
- web security-advisories@github.com
- web security-advisories@github.com
- web security-advisories@github.com
- web github.com