RHSA-2026:50287HighCVSS 7.5

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

Published
August 4, 2026
Last Modified
September 16, 2026

🔗 CVE IDs covered (4)

CVE-2026-69153 →CVE-2026-72815 →CVE-2026-73086 →CVE-2026-73646 →

📋 Description

CVE-2026-69153 — postcss: PostCSS: Information disclosure via crafted sourceMappingURL CVE-2026-72815 — github.com/go-chi/chi/middleware: go-chi chi: IP spoofing via X-Forwarded-For header allows bypass of access controls CVE-2026-73086 — nanoid: nanoid: Predictable ID generation due to integer overflow CVE-2026-73646 — postcss: PostCSS: Information disclosure via path traversal in source map auto-loading

🎯 Affected products4

  • Red Hat Hardened Images
  • prometheus3-13-main@aarch64 as a component of Red Hat Hardened Images
  • prometheus3-13-main@src as a component of Red Hat Hardened Images
  • prometheus3-13-main@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: Pass map: false when invoking PostCSS to disable source map auto-loading. This prevents the path traversal from being triggered, though it removes source map support entirely. Workaround: Do not rely on the `RealIP` middleware when accepting connections from untrusted networks. Instead, configure an upstream reverse proxy (such as NGINX or HAProxy) to overwrite or sanitize client-supplied `X-Forwarded-For` headers before forwarding traffic to the application. 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)