Is CVE-2026-70597 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-70597 being exploited in the wild.

How severe is CVE-2026-70597?

Medium severity, with a CVSS score of 6.3, published 5 August 2026.

Which products and versions are affected?

electron (npm) SEMVER:introduced=0,fixed=39.8.8.

Is there a fix for CVE-2026-70597?

Yes. electron (npm): upgrade to 39.8.8 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-70597 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-70597?

Check whether you run electron (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-70597: Electron code-signing bypass in macOS parent process validation

CVE-2026-70597 · Severity: medium · CVSS 6.3 · Published 2026-08-05

Electron is a framework used to build desktop applications like Slack, Discord, and VS Code. On macOS, a security flaw allows a local attacker to trick an Electron application into believing it was launched by a trusted source. If successful, the attacker can run unauthorized code with the same permissions as the application, potentially gaining access to the user's keychain, passwords, and sensitive system permissions.

Technologies: electron (npm). Vendors: npm.

Quick answers

Is CVE-2026-70597 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-70597 being exploited in the wild.
How severe is CVE-2026-70597?: Medium severity, with a CVSS score of 6.3, published 5 August 2026.
Which products and versions are affected?: electron (npm) SEMVER:introduced=0,fixed=39.8.8.
Is there a fix for CVE-2026-70597?: Yes. electron (npm): upgrade to 39.8.8 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-70597 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-70597?: Check whether you run electron (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

electron (npm): upgrade to 39.8.8 or later
```
npm install electron@39.8.8
```

Technical details

A Time-of-Check Time-of-Use (TOCTOU) race condition exists in Electron's macOS implementation of parent process validation. When fuse-based hardening is enabled to restrict 'ELECTRON_RUN_AS_NODE' and 'NODE_OPTIONS' to same-signed parents, the validation mechanism relied on PIDs which could be spoofed or recycled by a local process. An attacker with local access can exploit this to execute arbitrary code within the context of a signed Electron application, inheriting its Transparency, Consent, and Control (TCC) entitlements. The fix involves migrating from PID-based checks to using audit tokens for robust identity verification. Patches are available in versions 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.

Affected products

Electron electron < 39.8.8, 40.x < 40.9.0, 41.x < 41.2.1, 42.x < 42.0.0-beta.3

Identifiers

CVE-2026-70597
GHSA-jm7p-cc5g-qwxx

Timeline

2026-07-27: disclosed
2026-08-05: advisory

References

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