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CVE-2026-70597

Electron: Parent process code-sign check is spoofable

6.3 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
High
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

0.10%Unchanged since Aug 6, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.3

Electron: Parent process code-sign check is spoofable

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.

Record
CVE-2026-70597
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-367
Updated
2026-11-02
EUVDEUVD-2026-53403 6.3

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.

Record
EUVD-2026-53403
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-jm7p-cc5g-qwxx 6.3

Electron: Parent process code-sign check is spoofable

Impact

On macOS, the check Electron uses to confirm it was launched by a same-signed parent process could be bypassed by a local process. Apps that enable the fuse-based hardening restricting ELECTRON_RUN_AS_NODE and NODE_OPTIONS to same-signed parents rely on this check; a local attacker could bypass it and run their own code inside the signed app, inheriting its TCC permissions and keychain access.

Apps are only affected if they enable those macOS fuse-based restrictions. Apps that do not enable them are not affected.

Workarounds

There are no app side workarounds, you must update to a patched version of Electron.

Fixed Versions

  • 42.0.0-beta.3
  • 41.2.1
  • 40.9.0
  • 39.8.8

For more information

If you have any questions or comments about this advisory, email us at [email protected]

Record
GHSA-jm7p-cc5g-qwxx
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-367
Updated
2026-11-02
NVD 6.3

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.

Record
CVE-2026-70597
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-367
Updated
2026-11-02
OSV 6.3

Electron: Parent process code-sign check is spoofable

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.

Record
CVE-2026-70597
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-367
Updated
2026-11-02
OSVGHSA-jm7p-cc5g-qwxx 6.3

Electron: Parent process code-sign check is spoofable

Impact

On macOS, the check Electron uses to confirm it was launched by a same-signed parent process could be bypassed by a local process. Apps that enable the fuse-based hardening restricting ELECTRON_RUN_AS_NODE and NODE_OPTIONS to same-signed parents rely on this check; a local attacker could bypass it and run their own code inside the signed app, inheriting its TCC permissions and keychain access.

Apps are only affected if they enable those macOS fuse-based restrictions. Apps that do not enable them are not affected.

Workarounds

There are no app side workarounds, you must update to a patched version of Electron.

Fixed Versions

  • 42.0.0-beta.3
  • 41.2.1
  • 40.9.0
  • 39.8.8

For more information

If you have any questions or comments about this advisory, email us at [email protected]

Record
GHSA-jm7p-cc5g-qwxx
CVSS 3.1
6.3 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-367
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
electron
npm
 before 39.8.8
39.8.8
electron
npm
 40.0.0-alpha.1 up to 40.9.0
40.9.0
electron
npm
 41.0.0-alpha.1 up to 41.2.1
41.2.1
electron
npm
 42.0.0-alpha.1 up to 42.0.0-beta.3
42.0.0-beta.3
electron
npm
 40.0.0-alpha.1 up to 40.9.1
40.9.1

History

History
RecordedChangedSources
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-70597 is a medium vulnerability (CVSS 6.3) in Electron, published August 5, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.10%, the 1st percentile. Fixed in electron 39.8.8.

References

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