{"id":"RHSA-2026:66327","summary":"Red Hat Security Advisory: osbuild-composer security, bug fix, and enhancement update","modified":"2026-09-12T10:10:17Z","published":"2026-09-10T10:17:17Z","related":["GO-2026-4866","GO-2026-4977","GO-2026-4986","GO-2026-5038","GO-2026-5972","GO-2026-6088","GO-2026-6089","GO-2026-6090","GO-2026-6091","GO-2026-6218"],"upstream":["CVE-2026-33810","CVE-2026-33818","CVE-2026-39820","CVE-2026-41178","CVE-2026-42499","CVE-2026-42504","CVE-2026-56853","CVE-2026-56858","CVE-2026-56859","CVE-2026-56860","CVE-2026-56862"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:66327"},{"type":"ARTICLE","url":"https://access.redhat.com/security/updates/classification/#important"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2456335"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2467809"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2467820"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2484204"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2484830"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515815"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515820"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515827"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515838"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515839"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515840"},{"type":"ARTICLE","url":"https://issues.redhat.com/browse/RHEL-127068"},{"type":"ADVISORY","url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_66327.json"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-33810"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-33810"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33810"},{"type":"ARTICLE","url":"https://go.dev/cl/763763"},{"type":"ARTICLE","url":"https://go.dev/issue/78332"},{"type":"ARTICLE","url":"https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-4866"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-33818"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-33818"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33818"},{"type":"ARTICLE","url":"https://go.dev/cl/814980"},{"type":"ARTICLE","url":"https://go.dev/issue/80405"},{"type":"ARTICLE","url":"https://groups.google.com/g/golang-announce/c/94pEornpRlI"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-5972"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-39820"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-39820"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39820"},{"type":"ARTICLE","url":"https://go.dev/cl/759940"},{"type":"ARTICLE","url":"https://go.dev/issue/78566"},{"type":"ARTICLE","url":"https://groups.google.com/g/golang-announce/c/qcCIEXso47M"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-4986"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-41178"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-41178"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41178"},{"type":"ARTICLE","url":"https://github.com/open-telemetry/opentelemetry-go/pull/7880"},{"type":"ARTICLE","url":"https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-5wrp-cwcj-q835"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-42499"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-42499"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42499"},{"type":"ARTICLE","url":"https://go.dev/cl/771520"},{"type":"ARTICLE","url":"https://go.dev/issue/78987"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-4977"},{"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"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-56853"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-56853"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56853"},{"type":"ARTICLE","url":"https://go.dev/cl/795540"},{"type":"ARTICLE","url":"https://go.dev/issue/80205"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-6089"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-56858"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-56858"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56858"},{"type":"ARTICLE","url":"https://go.dev/cl/807100"},{"type":"ARTICLE","url":"https://go.dev/issue/80435"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-6091"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-56859"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-56859"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56859"},{"type":"ARTICLE","url":"https://go.dev/cl/803320"},{"type":"ARTICLE","url":"https://go.dev/issue/80481"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-6088"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-56860"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-56860"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56860"},{"type":"ARTICLE","url":"https://go.dev/cl/803681"},{"type":"ARTICLE","url":"https://go.dev/issue/80494"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-6218"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-56862"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-56862"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56862"},{"type":"ARTICLE","url":"https://go.dev/cl/804261"},{"type":"ARTICLE","url":"https://go.dev/issue/80528"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-6090"}],"affected":[{"package":{"name":"osbuild-composer","ecosystem":"Red Hat:enterprise_linux_eus:10.0","purl":"pkg:rpm/redhat/osbuild-composer"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:134.1-12.el10_0"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:66327.json"}},{"package":{"name":"osbuild-composer-core","ecosystem":"Red Hat:enterprise_linux_eus:10.0","purl":"pkg:rpm/redhat/osbuild-composer-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:134.1-12.el10_0"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:66327.json"}},{"package":{"name":"osbuild-composer-core-debuginfo","ecosystem":"Red Hat:enterprise_linux_eus:10.0","purl":"pkg:rpm/redhat/osbuild-composer-core-debuginfo"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:134.1-12.el10_0"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:66327.json"}},{"package":{"name":"osbuild-composer-debugsource","ecosystem":"Red Hat:enterprise_linux_eus:10.0","purl":"pkg:rpm/redhat/osbuild-composer-debugsource"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:134.1-12.el10_0"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:66327.json"}},{"package":{"name":"osbuild-composer-tests-debuginfo","ecosystem":"Red Hat:enterprise_linux_eus:10.0","purl":"pkg:rpm/redhat/osbuild-composer-tests-debuginfo"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:134.1-12.el10_0"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:66327.json"}},{"package":{"name":"osbuild-composer-worker","ecosystem":"Red Hat:enterprise_linux_eus:10.0","purl":"pkg:rpm/redhat/osbuild-composer-worker"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:134.1-12.el10_0"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:66327.json"}},{"package":{"name":"osbuild-composer-worker-debuginfo","ecosystem":"Red Hat:enterprise_linux_eus:10.0","purl":"pkg:rpm/redhat/osbuild-composer-worker-debuginfo"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:134.1-12.el10_0"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:66327.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L"}]}