CVE-2026-70597 Electron: Parent process code-sign check is spoofable
Local attackers can bypass Electron's parent process code-sign check to execute code within signed apps, inheriting their permissions and keychain access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-70597?
CVE-2026-70597 is a medium-severity vulnerability in Electronjs Electron, published on 5 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, the check Electron uses on macOS to confirm it was launched by a same-signed parent process could be bypassed by a local process. Apps that enable fuse-based hardening restricting ELECTRON_RUN_AS_NODE and NODE_OPTIONS to same-signed parents rely on this check, and a local attacker could bypass it and run code inside the signed app, inheriting its TCC permissions and keychain access. This issue is fixed in 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.
Weakness: CWE-367
Which versions are affected by CVE-2026-70597?
8 open source packages ship an affected version, including electron. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
electron npm | All versions | 39.8.8 |
electron npm | All versions | 39.8.8 |
electron npm | From 40.0.0-alpha.1 | 40.9.1 |
electron npm | From 40.0.0-alpha.1 | 40.9.1 |
electron npm | From 41.0.0-alpha.1 | 41.2.1 |
electron npm | From 41.0.0-alpha.1 | 41.2.1 |
2 more packages
electron npm | From 42.0.0-alpha.1 | 42.0.0-beta.3 |
electron npm | From 42.0.0-alpha.1 | 42.0.0-beta.3 |
Products include Electronjs Electron.
How do I fix CVE-2026-70597?
Upgrade electron to a fixed version for your release line: 39.8.8, 40.9.1, 41.2.1 or 42.0.0-beta.3.
Is CVE-2026-70597 being exploited?
There is no known exploitation of CVE-2026-70597 in the wild and no public exploit code.
Other vulnerabilities in Electronjs Electron
- CVE-2017-16151 Chromium Remote Code Execution in electron
- CVE-2018-1000118 Electron protocol handler browser vulnerable to Command Injection
- CVE-2026-34780 Electron: Context Isolation bypass via contextBridge VideoFrame transfer
- CVE-2026-102676 Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions
- CVE-2026-102673 Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab
Sources
Also known as GHSA-jm7p-cc5g-qwxx.