libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a use-after-free in xmlSchemaIDCFillNodeTables and xmlSchemaBubbleIDCNodeTables in xmlschemas.c. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be used.
{
"sources": [
{
"modified": "2025-10-16T19:39:26.400Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2024-56171",
"imported": "2025-10-28T18:09:09.642Z",
"id": "CVE-2024-56171",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56171",
"published": "2025-02-18T22:15:12.797Z"
}
],
"license": "CC-BY-4.0"
}