In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c.
{
"license": "CC-BY-4.0",
"sources": [
{
"modified": "2026-06-17T05:47:50.837Z",
"database_specific": {
"status": "Modified"
},
"published": "2023-04-24T21:15:09.180Z",
"imported": "2026-07-17T21:05:58.777Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2023-28484",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28484",
"id": "CVE-2023-28484"
}
]
}