Medium 6.7Published Oct 13, 2026

CVE-2026-102672Electron: Local race condition in Squirrel.Mac update installation on macOS

Updated under an hour ago (2026-10-19 08:23 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 6.7 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-367
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Oct 13, 2026
First seen by InfoSec Signals: Oct 13, 2026

Affected products

Affected products

electron electron electron:electron (from the name)	before 39.8.10; from 40.0.0-alpha.1, < 41.10.5; from 42.0.0-alpha.1, < 42.0.0-beta.2	CNA record

References

https://github.com/electron/electron/security/advisories/GHSA-vv43-5jgx-7qv8x-refsource-confirm
https://github.com/electron/electron/pull/50745x-refsource-misc
https://github.com/electron/electron/commit/01faabfc250801a980fc94d64608046c67fc1cd9x-refsource-misc
https://github.com/electron/electron/commit/15e2928a5c5f01759107b414010e220d90d59cefx-refsource-misc
https://github.com/electron/electron/commit/a0f9ff4cc0340545008424232d49caadd9c0c767x-refsource-misc
https://github.com/electron/electron/commit/b8f25c4cedb2e0f5f475912b709aba19c57c26bex-refsource-misc
https://github.com/electron/electron/releases/tag/v39.8.10x-refsource-misc
https://github.com/electron/electron/releases/tag/v41.10.5x-refsource-misc
https://github.com/electron/electron/releases/tag/v42.0.0-beta.2x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.