RHSA-2026:52414MediumCVSS 5.4
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
🔗 CVE IDs covered (1)
📋 Description
CVE-2026-58055 — nghttp2: nghttp2: HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests
🎯 Affected products4
- Red Hat Hardened Images
- nghttp2-main@aarch64 as a component of Red Hat Hardened Images
- nghttp2-main@src as a component of Red Hat Hardened Images
- nghttp2-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: Configure your WAF or load balancer to drop incoming HTTP/1.1 requests that contain both Upgrade and Content-Length headers. This blocks the malformed traffic at the edge before it can reach the vulnerable proxy without impacting legitimate users.
🔗 References (5)
- selfhttps://access.redhat.com/errata/RHSA-2026:52414
- externalhttps://access.redhat.com/security/cve/CVE-2026-58055
- externalhttps://access.redhat.com/security/updates/classification/
- externalhttps://images.redhat.com/
- selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_52414.json