{"id":"CVE-2026-93858","title":"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","summary":"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…","severity":"high","cvss":8.7,"cvssVector":"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","cwe":["CWE-78"],"vendor":"OpenStack","product":"Mistral","affected":["Mistral < 20.1.1","Mistral >= 21.0.0 < 21.0.1","Mistral >= 22.0.0 < 22.0.1","Mistral 23.0.0"],"published":"2026-10-08","updated":"2026-10-08","sourceUpdated":"2026-10-08T21:10:41.427","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93858","references":[{"url":"https://launchpad.net/bugs/2162100","label":"cve@mitre.org"},{"url":"https://security.openstack.org/ossa/OSSA-2026-044.html","label":"cve@mitre.org"},{"url":"https://launchpad.net/bugs/2162100","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-10-08T17:56:18.408754Z"},"cvssSource":"cna","ingestedAt":"2026-10-08T17:56:11.737Z","slug":"CVE-2026-93858","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":60,"depthScoreParts":{"impact":47.8,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":218245,"id":"CVE-2026-93858","ts":1791485990535,"field":"exploit_available","old":"false","new":"true"}]}