RHSA-2026:47618HighCVSS 7.5

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Published
July 28, 2026
Last Modified
October 6, 2026

🔗 CVE IDs covered (2)

CVE-2026-56764 →CVE-2026-42127 →

📋 Description

CVE-2026-42127 — grafana: Grafana: Denial of Service due to excessive memory allocation via large JSON payloads CVE-2026-56764 — hono: Hono - Timing Attack in basicAuth and bearerAuth Middleware

🎯 Affected products4

  • Red Hat Hardened Images
  • grafana13.1-0:13.1.1-0.2.hum1@aarch64 as a component of Red Hat Hardened Images
  • grafana13.1-0:13.1.1-0.2.hum1@src as a component of Red Hat Hardened Images
  • grafana13.1-0:13.1.1-0.2.hum1@x86_64 as a component of Red Hat Hardened Images

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Workaround: Restrict network access to the Grafana instance to only trusted clients and networks. This can be achieved by configuring firewall rules to limit inbound connections to the Grafana service port. If Grafana is exposed via a reverse proxy, ensure the proxy is configured to limit request body sizes to prevent large payloads from reaching Grafana. A service restart may be required for network configuration changes to take effect.

🔗 References (6)