Medium severity · published Oct 13, 2026
CVE-2026-102672
Electron: Local race condition in Squirrel.Mac update installation on macOS
6.7
CVSS
0.1%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
electron · electron
< 39.8.10; >= 40.0.0-alpha.1, < 41.10.5; >= 42.0.0-alpha.1, < 42.0.0-beta.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-102672
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-102672
x_refsource_CONFIRM
https://github.com/electron/electron/security/advisories/GHSA-vv43-5jgx-7qv8
x_refsource_MISC
https://github.com/electron/electron/pull/50745
x_refsource_MISC
https://github.com/electron/electron/commit/01faabfc250801a980fc94d64608046c67fc1cd9
x_refsource_MISC
https://github.com/electron/electron/commit/15e2928a5c5f01759107b414010e220d90d59cef
x_refsource_MISC
https://github.com/electron/electron/commit/a0f9ff4cc0340545008424232d49caadd9c0c767
x_refsource_MISC
https://github.com/electron/electron/commit/b8f25c4cedb2e0f5f475912b709aba19c57c26be
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