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CVE-2026-102672

MEDIUM 6.7

Published 2026-10-13 · Last modified 2026-10-13

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.5, and 42.0.0-beta.2, Electron applications on macOS that use Squirrel.Mac-based automatic updates are vulnerable to a local race in the privileged ShipIt helper. The helper did not bind the validated update target to one canonical application-bundle path for the full installation, allowing a local attacker to redirect the root-level write so that it overwrites another application's files instead of the application that initiated the update. Applications on other platforms and macOS applications that do not use Squirrel.Mac-based automatic updates are not affected. This issue is fixed in versions 39.8.10, 41.10.5, and 42.0.0-beta.2.

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.1%chance of exploitation in 30 days · 1st percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

6.7CVSS 3.1 · MEDIUM

  • ConfidentialityHigh
  • IntegrityHigh
  • AvailabilityHigh

What an attacker needs

  • ⚠Access: Requires local access to the host
  • ⚠Privileges: Requires a low-privilege account
  • ⚠User interaction: A user must take an action (click / open a file)
  • ⚠Complexity: Needs a race window or specific setup

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

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Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Electron

Products Electron

Weakness (CWE)

  • CWE-367: : Time-of-check Time-of-use (TOCTOU) Race Condition

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

References and research data (JSON)

Packages and version ranges

Each advisory describes its own package and affected ranges. A boundary applies to that range; it is not a universal upgrade recommendation.

  • electron npm

    pkg:npm/electron

    SEMVER range
    • All earlier versions (introduced 0)
    • Fixed boundary (excluded): 39.8.10
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-vv43-5jgx-7qv8/GHSA-vv43-5jgx-7qv8.json"
  }
}
    GitHub Advisory Database · GHSA-vv43-5jgx-7qv8 · Updated 2026-09-29T18:15:05.576764582Z
  • electron npm

    pkg:npm/electron

    SEMVER range
    • Introduced version (included): 40.0.0-alpha.1
    • Fixed boundary (excluded): 41.10.5
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-vv43-5jgx-7qv8/GHSA-vv43-5jgx-7qv8.json"
  }
}
    GitHub Advisory Database · GHSA-vv43-5jgx-7qv8 · Updated 2026-09-29T18:15:05.576764582Z
  • electron npm

    pkg:npm/electron

    SEMVER range
    • Introduced version (included): 42.0.0-alpha.1
    • Fixed boundary (excluded): 42.0.0-beta.2
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-vv43-5jgx-7qv8/GHSA-vv43-5jgx-7qv8.json"
  }
}
    GitHub Advisory Database · GHSA-vv43-5jgx-7qv8 · Updated 2026-09-29T18:15:05.576764582Z

All CVSS metrics

  • MEDIUM 6.7 v3.1 · CNA Primary
    CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
  • MEDIUM 6.7 v3.1 · NVD Secondary
    CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

References

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS