Severity: moderate

IPC messages delivered to the wrong frame



IPC messages sent from the main process to a subframe in the renderer process, through webContents.sendToFrame, event.reply or when using the remote module, can in some cases be delivered to the wrong frame.

If your app does ANY of the following, then it is impacted by this issue:

  • Uses remote
  • Calls webContents.sendToFrame
  • Calls event.reply in an IPC message handler


Upgrade to a fixed version or later: 9.4.0, 10.2.0, 11.1.0, or 12.0.0-beta.9


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Advisory timeline

  1. published

    Advisory Published
    Feb 22nd, 2021
  2. reported

    Reported by Anonymous
    Feb 22nd, 2021