RHSA-2026:71906HighCVSS 7.5

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Published
September 25, 2026
Last Modified
November 1, 2026

🔗 CVE IDs covered (4)

CVE-2026-75838 →CVE-2026-86472 →CVE-2026-93450 →CVE-2026-93981 →

📋 Description

CVE-2026-75838 — dompurify: DOMPurify: Cross-Site Scripting via IN_PLACE sanitization CVE-2026-86472 — fast-uri: fast-uri: Security bypass due to inconsistent host case normalization CVE-2026-93450 — github.com/go-openapi/swag: go-openapi/swag: Denial of Service via uncontrolled JSON recursion CVE-2026-93981 — hono: hono/jsx: Cross-Site Scripting via Unescaped Strings

🎯 Affected products4

  • Red Hat Hardened Images
  • grafana13.2-0:13.2.1-0.7.hum1@aarch64 as a component of Red Hat Hardened Images
  • grafana13.2-0:13.2.1-0.7.hum1@src as a component of Red Hat Hardened Images
  • grafana13.2-0:13.2.1-0.7.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: To mitigate this vulnerability, avoid using DOMPurify with a custom IN_PLACE sanitization configuration that includes an element-removal hook. Default DOMPurify configurations are not affected by this flaw. Workaround: Applications utilizing fast-uri for host validation should implement case-insensitive comparisons by converting the parsed host to lowercase before performing any allowlist or denylist checks. This ensures that variations in host casing, including percent-encoded uppercase octets, do not lead to security bypasses. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

🔗 References (8)