{"id":"RHSA-2026:57456","summary":"Red Hat Security Advisory: OpenShift Container Platform 4.21.30 packages and security update","modified":"2026-08-27T10:15:20Z","published":"2026-08-26T10:17:35Z","related":["GO-2026-5038"],"upstream":["CVE-2026-42504"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:57456"},{"type":"ARTICLE","url":"https://access.redhat.com/security/updates/classification/#important"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2484204"},{"type":"ADVISORY","url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_57456.json"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-42504"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-42504"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42504"},{"type":"ARTICLE","url":"https://go.dev/cl/774481"},{"type":"ARTICLE","url":"https://go.dev/issue/79217"},{"type":"ARTICLE","url":"https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-5038"}],"affected":[{"package":{"name":"openshift","ecosystem":"Red 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