A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the match_pattern() function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.
{
"sources": [
{
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0967",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-0967",
"modified": "2026-06-17T10:11:42.407Z",
"id": "CVE-2026-0967",
"imported": "2026-07-22T03:16:27.709Z",
"published": "2026-03-26T21:17:00.970Z",
"database_specific": {
"status": "Modified"
}
}
],
"license": "CC-BY-4.0"
}