{"id":"CLSA-2026-1791195137","summary":"Fix CVE(s): CVE-2026-66046, CVE-2026-76641, CVE-2026-93990","details":"   * SECURITY UPDATE: denial of service through quadratic runtime in the\n     default-attribute lookup performed by storeAtts()\n     - debian/patches/CVE-2026-66046.patch: resolve whether an attribute is\n       declared CDATA through the per-element defaultAttsNames hash table\n       instead of a linear scan of defaultAtts in expat/lib/xmlparse.c\n     - CVE-2026-66046\n   * SECURITY UPDATE: out-of-bounds read of .attIndex in storeAtts() for\n     parsers created by XML_ExternalEntityParserCreate()\n     - debian/patches/CVE-2026-76641.patch: make dtdCopy() create the\n       defaultAttsNames entries with the size of NAME_AND_DEFAULT_ATTRIBUTE\n       and carry the attribute index over in expat/lib/xmlparse.c\n     - CVE-2026-76641\n   * SECURITY UPDATE: malformed UTF-16 accepted because a high surrogate was\n     not required to be followed by a low surrogate\n     - debian/patches/CVE-2026-93990.patch: reject a UTF-16 high surrogate\n       whose second code unit is not a low surrogate in the little2_ and\n       big2_ tokenizers in expat/lib/xmltok.c and expat/lib/xmltok_impl.c\n     - CVE-2026-93990","modified":"2026-10-26T09:31:40.161728785Z","published":"2026-10-05T10:12:31Z","upstream":["CVE-2026-66046","CVE-2026-76641","CVE-2026-93990"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/ubuntu20.04els/CLSA-2026-1791195137.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66046"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76641"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93990"}],"affected":[{"package":{"name":"expat","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/expat?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.9-1ubuntu0.8+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791195137.json"}},{"package":{"name":"libexpat1","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/libexpat1?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.9-1ubuntu0.8+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791195137.json"}},{"package":{"name":"libexpat1-dev","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/libexpat1-dev?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.9-1ubuntu0.8+tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1791195137.json"}}],"schema_version":"1.9.0"}