{"id":"CLSA-2026-1784290625","summary":"expat: Fix of 2 CVEs","details":"- CVE-2026-50219: reject libexpat API re-entry from inside handler callbacks\n  to prevent use-after-free\n- CVE-2026-56131: extend the handler re-entrancy guard to XML_ResumeParser\n- CVE-2026-56412: guard XML_TOK_DATA_CHARS handler calls in doCdataSection","modified":"2026-10-26T09:31:17.916861989Z","published":"2026-07-17T12:17:30Z","upstream":["CVE-2026-50219","CVE-2026-56131","CVE-2026-56412"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2026-1784290625.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50219"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56412"}],"affected":[{"package":{"name":"expat","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/expat?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0-5.el9_6.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1784290625.json"}},{"package":{"name":"expat-devel","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/expat-devel?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0-5.el9_6.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1784290625.json"}},{"package":{"name":"expat-static","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/expat-static?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0-5.el9_6.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1784290625.json"}}],"schema_version":"1.9.0"}