RHSA-2026:6564HighCVSS 9.1
Red Hat Security Advisory: OpenShift Container Platform 4.20.18 bug fix and security update
🔗 CVE IDs covered (6)
📋 Description
CVE-2025-58183 — golang: archive/tar: Unbounded allocation when parsing GNU sparse map CVE-2025-61726 — golang: net/url: Memory exhaustion in query parameter parsing in net/url CVE-2025-61728 — golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip CVE-2026-22028 — preact: Preact: Arbitrary script execution via JSON serialization protection bypass CVE-2026-25679 — net/url: Incorrect parsing of IPv6 host literals in net/url CVE-2026-33186 — google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation
🔗 References (9)
- selfhttps://access.redhat.com/errata/RHSA-2026:6564
- externalhttps://access.redhat.com/security/cve/CVE-2025-58183
- externalhttps://access.redhat.com/security/cve/CVE-2025-61726
- externalhttps://access.redhat.com/security/cve/CVE-2025-61728
- externalhttps://access.redhat.com/security/cve/CVE-2026-22028
- externalhttps://access.redhat.com/security/cve/CVE-2026-25679
- externalhttps://access.redhat.com/security/cve/CVE-2026-33186
- externalhttps://access.redhat.com/security/updates/classification/
- selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_6564.json