CVE-2020-27831: Red Hat Quay

Medium severity, CVSS 4.3. EPSS: 0.5% chance of exploitation in the next 30 days.

A flaw was found in Red Hat Quay, where it does not properly protect the authorization token when authorizing email addresses for repository email notifications. This flaw allows an attacker to add email addresses they do not own to repository notifications.

Affected products

• Red Hat Quay: from 3.0.0, before 3.3.3 (fixed in 3.3.3)

Published 2021-05-27. Last modified 2026-06-17.