{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "23.0.0"
              },
              {
                "last_affected": "23.0.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "a28388efe2dab9d20e444fa6322cdc87372bbd41"
            },
            {
              "last_affected": "a28388efe2dab9d20e444fa6322cdc87372bbd41"
            }
          ],
          "repo": "https://opendev.org/openstack/mistral",
          "type": "GIT"
        }
      ],
      "versions": [
        "23.0.0"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "mitre",
    "cwe_ids": [
      "CWE-78"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93858.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "20.1.1"
          },
          {
            "introduced": "21.0.0"
          },
          {
            "fixed": "21.0.1"
          },
          {
            "introduced": "22.0.0"
          },
          {
            "fixed": "22.0.1"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "In OpenStack Mistral through 23.0.0, the std.ssh_proxied action passes a caller-supplied proxy_command value directly to paramiko.ProxyCommand() before any SSH connection to a gateway or target host is attempted. An authenticated project member can use the standard action-execution API to submit an arbitrary local command as proxy_command; paramiko starts that command as a subprocess on the executor host under the executor's own service account, independent of whether the SSH connection itself ever succeeds. Only Mistral deployments that permit the std.ssh_proxied action, the default configuration, are affected.",
  "id": "CVE-2026-93858",
  "modified": "2026-10-10T02:30:21.439060359Z",
  "published": "2026-10-08T17:28:58.167Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://opendev.org/openstack/mistral"
    },
    {
      "type": "WEB",
      "url": "https://security.openstack.org/ossa/OSSA-2026-044.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93858.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93858"
    },
    {
      "type": "REPORT",
      "url": "https://launchpad.net/bugs/2162100"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ]
}