Time-of-check Time-of-use (TOCTOU) Race Condition Affecting electron package, versions <39.8.8>=40.0.0-alpha.2 <40.9.1>=41.0.0-alpha.1 <41.2.1>=42.0.0-alpha.1 <42.0.0-beta.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-ELECTRON-18563340
- published6 Aug 2026
- disclosed5 Aug 2026
- creditUnknown
Introduced: 5 Aug 2026
NewCVE-2026-70597 (opens in a new tab)How to fix?
Upgrade electron to version 39.8.8, 40.9.1, 41.2.1, 42.0.0-beta.3 or higher.
Overview
electron is a framework which lets you write cross-platform desktop applications using JavaScript, HTML and CSS.
Affected versions of this package are vulnerable to Time-of-check Time-of-use (TOCTOU) Race Condition via the parent process code-sign verification on macOS. An attacker can execute arbitrary code within the context of a signed application by bypassing the code-sign check from a local process, potentially inheriting sensitive permissions and keychain access.
Note: This is only exploitable if fuse-based hardening restricting ELECTRON_RUN_AS_NODE and NODE_OPTIONS to same-signed parents is enabled.