In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time.
{
"license": "CC-BY-4.0",
"sources": [
{
"database_specific": {
"status": "Modified"
},
"modified": "2026-06-17T09:56:45.240Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-66382",
"published": "2025-11-28T07:15:57.900Z",
"id": "CVE-2025-66382",
"imported": "2026-07-17T21:45:16.966Z",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66382"
}
]
}