DEBIAN-CVE-2026-93858

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Source
https://security-tracker.debian.org/tracker/CVE-2026-93858
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93858.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-93858
Upstream
Published
2026-10-08T18:18:30Z
Modified
2026-10-09T08:00:08Z
Severity
  • 8.7 (High) CVSS_V4 - 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
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.

References

Affected packages

Debian:12 / mistral

Package

Name
mistral
Purl
pkg:deb/debian/mistral?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

15.*
15.0.0-1
15.0.0-1+deb12u1
16.*
16.0.0~rc1-1
16.0.0-1
16.0.0-2
16.0.0-3
16.0.0-4
17.*
17.0.0~rc1-1
17.0.0-1
17.0.0-2
17.0.0-3
18.*
18.0.0~rc1-1
18.0.1-1
19.*
19.0.0~rc1-1
19.0.0~rc1-2
19.0.0-1
19.0.0-2
20.*
20.0.0~rc1-1
20.0.0~rc1-2
20.0.0-1
20.0.0-2
21.*
21.0.0~rc1-1
21.0.0~rc1-2
21.0.0-1
21.0.0-2
21.0.0-4
21.0.0-5
21.0.0-6
22.*
22.0.0~rc1-1
22.0.0~rc1-2
22.0.0~rc1-3
22.0.0-1
22.0.0-3
23.*
23.0.0~rc1-1
23.0.0~rc1-2
23.0.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93858.json"

Debian:13 / mistral

Package

Name
mistral
Purl
pkg:deb/debian/mistral?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

20.*
20.0.0-2
20.0.0-2+deb13u1
21.*
21.0.0~rc1-1
21.0.0~rc1-2
21.0.0-1
21.0.0-2
21.0.0-4
21.0.0-5
21.0.0-6
22.*
22.0.0~rc1-1
22.0.0~rc1-2
22.0.0~rc1-3
22.0.0-1
22.0.0-3
23.*
23.0.0~rc1-1
23.0.0~rc1-2
23.0.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93858.json"

Debian:14 / mistral

Package

Name
mistral
Purl
pkg:deb/debian/mistral?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

20.*
20.0.0-2
21.*
21.0.0~rc1-1
21.0.0~rc1-2
21.0.0-1
21.0.0-2
21.0.0-4
21.0.0-5
21.0.0-6
22.*
22.0.0~rc1-1
22.0.0~rc1-2
22.0.0~rc1-3
22.0.0-1
22.0.0-3
23.*
23.0.0~rc1-1
23.0.0~rc1-2
23.0.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93858.json"