Affinity Global Check - Review the use of the `affinity` property

When specified, renderers with the same affinity will run in the same renderer process.

Note that when reusing the renderer process, certain webPreferences properties will also be shared between the web pages even when their values are different. This can lead to unexpected security configuration overrides.

Risk

Improper use of the affinity property can cause the unwanted sharing of webPreferences options.

Auditing

It is suggested to use exact same webPreferences for web pages with the same affinity. Look for all occurrences of the affinity attribute and compare their values:

HTML

        <webview src="https://doyensec.com" webpreferences="affinity=secPrefs"></webview>

JS

        firstWin = new BrowserWindow({
  width: 800,
  height: 600,
  webPreferences: {
    nodeIntegration: true,
    affinity: 'secPrefs'
  }
});

secondWin = new BrowserWindow({
  width: 800,
  height: 600,
  webPreferences: {
    nodeIntegration: false,
    affinity: 'secPrefs'
  }
});

References