In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.
{
"sources": [
{
"database_specific": {
"status": "Analyzed"
},
"id": "CVE-2026-35386",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35386",
"imported": "2026-07-17T22:35:56.807Z",
"published": "2026-04-02T17:16:27.623Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-35386",
"modified": "2026-07-07T15:55:29.950Z"
},
{
"id": "EUVD-2026-18400",
"html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-18400",
"imported": "2026-07-17T22:36:05.885Z",
"published": "2026-04-02T16:44:27Z",
"url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-18400",
"modified": "2026-04-03T03:55:45Z"
}
],
"license": "CC-BY-4.0"
}