What’s Vulnerable › Vulnerabilities

CVE-2020-27831

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-27 · updated 2026-06-17
• Weakness: CWE-284

Description

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 3: from 3.0.0 before 3.3.3 — fixed in 3.3.3

How to fix

Upgrade to a fixed version: Red Hat Quay 3 3.3.3. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1905758
• https://bugzilla.redhat.com/show_bug.cgi?id=1905758

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