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Electron: Local race condition in Squirrel.Mac update installation on macOS

Type: advisorySource: OSV1 source record

### Impact On macOS, Electron bundles the Squirrel.Mac auto-update framework, whose privileged `ShipIt` helper performs the final step of an update as root. A local attacker could cause that helper to overwrite a different application's files, as root, instead of the app that started the update. Exploitation requires local access to the machine. Apps are only affected on macOS if they ship Squirrel.Mac-based auto-updates. Apps on other platforms, or that do not use Squirrel.Mac auto-updates, 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.2` * `41.10.5` * `39.8.10` ### For more information If you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)

Announced Source revision 1
Original source ↗

GHSA-vv43-5jgx-7qv8

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:GHSA-vv43-5jgx-7qv8

electron

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
39.8.10

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

electron

Source reference: /affected/1/package/name

Affected versions
Not stated in this record
Fixed versions
41.10.5

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

electron

Source reference: /affected/2/package/name

Affected versions
Not stated in this record
Fixed versions
42.0.0-beta.2

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "39.8.10"
          }
        ]
      }
    ],
    "package": {
      "name": "electron",
      "purl": "pkg:npm/electron",
      "ecosystem": "npm"
    },
    "database_specific": {
      "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-vv43-5jgx-7qv8/GHSA-vv43-5jgx-7qv8.json"
    }
  },
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "40.0.0-alpha.1"
          },
          {
            "fixed": "41.10.5"
          }
        ]
      }
    ],
    "package": {
      "name": "electron",
      "purl": "pkg:npm/electron",
      "ecosystem": "npm"
    },
    "database_specific": {
      "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-vv43-5jgx-7qv8/GHSA-vv43-5jgx-7qv8.json"
    }
  },
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "42.0.0-alpha.1"
          },
          {
            "fixed": "42.0.0-beta.2"
          }
        ]
      }
    ],
    "package": {
      "name": "electron",
      "purl": "pkg:npm/electron",
      "ecosystem": "npm"
    },
    "database_specific": {
      "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-vv43-5jgx-7qv8/GHSA-vv43-5jgx-7qv8.json"
    }
  }
]
Related CVEs
CVE-2026-102672

Source reference: /aliases

Publisher severity

No explicit severity was provided.

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

CVE-2026-102672 · Medium

electron

Event
#30763 · Revision 1
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Publisher date
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