{"id":"RLSA-2026:65534","summary":"Important: image-builder security update","details":"A local binary for building customized OS artifacts such as VM images and OSTree commits. Uses osbuild under the hood.\n\nSecurity Fix(es):\n\n* crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation (CVE-2026-32281)\n\n* crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application (CVE-2026-33810)\n\n* crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280)\n\n* net/mail: golang: net/mail: Denial of Service via pathological email address parsing (CVE-2026-42499)\n\n* net/mail: golang: Go net/mail: Denial of Service via crafted email inputs (CVE-2026-39820)\n\n* net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811)\n\n* golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821)\n\n* mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header (CVE-2026-42504)\n\n* encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818)\n\n* net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution (CVE-2026-56860)\n\n* net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service (CVE-2026-56853)\n\n* html/template: golang: Go html/template: Cross-Site Scripting via pathological input (CVE-2026-56858)\n\n* crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862)\n\n* encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue (CVE-2026-56859)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-09-09T18:24:35.680160882Z","published":"2026-09-09T18:08:44.206459Z","upstream":["CVE-2026-32280","CVE-2026-32281","CVE-2026-33810","CVE-2026-33811","CVE-2026-33818","CVE-2026-39820","CVE-2026-39821","CVE-2026-42499","CVE-2026-42504","CVE-2026-56853","CVE-2026-56858","CVE-2026-56859","CVE-2026-56860","CVE-2026-56862"],"database_specific":{"license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:65534"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:65534"},{"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=2484204"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2456339"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515838"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2456335"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515840"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2467820"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2456333"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2480756"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2467809"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2467822"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515815"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515839"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:65534"}],"affected":[{"package":{"name":"image-builder","ecosystem":"Rocky Linux:10","purl":"pkg:rpm/rocky-linux/image-builder?distro=rocky-linux-10&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:52.1-1.el10_2.2.rocky.0.1"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:65534.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"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}