In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.
{
"sources": [
{
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25210",
"published": "2026-01-30T07:16:15.570Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-25210",
"imported": "2026-07-17T21:45:35.194Z",
"id": "CVE-2026-25210",
"database_specific": {
"status": "Modified"
},
"modified": "2026-06-17T10:24:19.123Z"
}
],
"license": "CC-BY-4.0"
}