CVE-2026-16254: Red Hat Advanced Cluster Security 4

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

A flaw was found in claircore's apk package scanner. Malformed package-database data in a container layer can cause an out-of-bounds access that panics the scanner. If that panic is not recovered, the Clair indexer process can crash, leading to a denial of service.

Affected products

• Red Hat Red Hat Advanced Cluster Security 4
• Red Hat Red Hat Quay 3

Published 2026-07-20. Last modified 2026-07-21.