{"id":"RLSA-2026:72663","summary":"Important: expat security update","details":"Expat is a C library for parsing XML documents.\n\nSecurity Fix(es):\n\n* expat: Expat: Denial of Service via quadratic complexity in attribute processing (CVE-2026-66046)\n\n* expat: Expat: XML Injection via Malformed UTF-16 Input (CVE-2026-93990)\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":"2026-09-30T12:45:02.627921825Z","published":"2026-09-30T12:05:19.277561Z","upstream":["CVE-2026-66046","CVE-2026-93990"],"database_specific":{"license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:72663"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:72663"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2517901"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2538967"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:72663"}],"affected":[{"package":{"name":"expat","ecosystem":"Rocky Linux:9","purl":"pkg:rpm/rocky-linux/expat?distro=rocky-linux-9&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.5.0-6.el9_8.5"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:72663.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}