CVE-2026-16910: Red Hat Openshift Update Service

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

A flaw was found in Red Hat Quay's notification webhook feature. The Slack and generic webhook notification handlers accept user-supplied URLs without SSRF validation, allowing a repository administrator to make the Quay worker issue POST requests to internal network addresses or cloud infrastructure endpoints that should not be reachable from the application.

Affected products

• Red Hat Red Hat Openshift Update Service
• Red Hat Red Hat Quay 3

Published 2026-07-24. Last modified 2026-07-24.