title: Arbitrary file read via window-open IPC in Electron
description: In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, arbitrary local file read is possible by defining unsafe window options on a child window opened via window.open. As a workaround, ensure you are calling `event.preventDefault()` on all new-window events where the `url` or `options` is not something you expect. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.
problem types: {"CWE-552":"Files or Directories Accessible to External Parties"}
affected:
{
product: electron
vendor: electron
versions:
status: affected, version: >= 9.0.0-beta.0, <= 9.0.0-beta.20
status: affected, version: >= 8.0.0, < 8.2.4
status: affected, version: < 7.2.4
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 6.8
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: NONE
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
version: 3.1
]