{"id":"CLSA-2026-1790172968","summary":"expat: Fix of CVE-2026-93990","details":"- CVE-2026-93990: reject a UTF-16 high surrogate that is not followed by a low\n  surrogate, by adding LITTLE2_/BIG2_IS_INVALID_CHAR and the matching\n  little2_/big2_isInvalid4 vtable entries to the UTF-16 tokenizers in\n  lib/xmltok.c, so a lone high surrogate can no longer consume the following\n  code unit as a fake low surrogate and hide markup from the parser","modified":"2026-10-26T09:31:43.856465534Z","published":"2026-09-23T14:16:18Z","upstream":["CVE-2026-93990"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/centos8.4els/CLSA-2026-1790172968.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93990"}],"affected":[{"package":{"name":"expat","ecosystem":"TuxCare:CentOS:8.4","purl":"pkg:rpm/tuxcare/expat?distro=centos-8.4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0-1.el8.tuxcare.els9"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1790172968.json"}},{"package":{"name":"expat-devel","ecosystem":"TuxCare:CentOS:8.4","purl":"pkg:rpm/tuxcare/expat-devel?distro=centos-8.4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0-1.el8.tuxcare.els9"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1790172968.json"}},{"package":{"name":"expat-static","ecosystem":"TuxCare:CentOS:8.4","purl":"pkg:rpm/tuxcare/expat-static?distro=centos-8.4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0-1.el8.tuxcare.els9"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1790172968.json"}}],"schema_version":"1.9.0"}