CVE-2020-4075

moderate-risk

Published 2020-07-07

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.

Do I need to act?

0.26% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.8/10 Medium

NETWORK / HIGH complexity

Affected Products (20)

Electron

Affected Vendors

Electronjs

References (4)

Third Party Advisory https://github.com/electron/electron/security/advisories/GHSA-f9mq-jph6-9mhm

Release Notes https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824

Third Party Advisory https://github.com/electron/electron/security/advisories/GHSA-f9mq-jph6-9mhm

Release Notes https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824

/ 100

moderate-risk

Severity 21/34 · High

Exploitability 1/34 · Minimal

Exposure 20/34 · Moderate