CVE-2026-93858
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.
CVE-2026-93858
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93858
Mistral
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://opendev.org/openstack/mistral",
"vendor": "OpenStack",
"product": "Mistral",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "20.1.1",
"versionType": "semver"
},
{
"status": "affected",
"version": "21.0.0",
"lessThan": "21.0.1",
"versionType": "semver"
},
{
"status": "affected",
"version": "22.0.0",
"lessThan": "22.0.1",
"versionType": "semver"
},
{
"status": "affected",
"version": "23.0.0",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-93858
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #13116 · Revision 1
- Added to Heist Feed
- Publisher date