In OpenStack Mistral through 23.0.0, the /v2/maintenance API controller clears the request context and calls the maintenance service directly without any policy enforcement. Any holder of a valid Mistral token, regardless of assigned role, can read and change the service's cluster-wide maintenance state. Setting the state to PAUSED stops processing of new workflow and execution objects across all tenant projects until an operator restores it.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
OpenStack Mistral unaffected
Version Status Constraints
0 affected < 20.1.1
21.0.0 affected < 21.0.1
22.0.0 affected < 22.0.1
23.0.0 affected —

No data.

No data.

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Vendors Products
Openstack Subscribe
Mistral Subscribe

Project Subscriptions

Vendors Products
Openstack Subscribe
Mistral Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://launchpad.net/bugs/2162789 cve-icon cve-icon
https://security.openstack.org/ossa/OSSA-2026-044.html cve-icon cve-icon
History

Thu, 08 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
First Time appeared Openstack
Openstack mistral
Vendors & Products Openstack
Openstack mistral

Thu, 08 Oct 2026 17:45:00 +0000

Type Values Removed Values Added
Description In OpenStack Mistral through 23.0.0, the /v2/maintenance API controller clears the request context and calls the maintenance service directly without any policy enforcement. Any holder of a valid Mistral token, regardless of assigned role, can read and change the service's cluster-wide maintenance state. Setting the state to PAUSED stops processing of new workflow and execution objects across all tenant projects until an operator restores it.
Weaknesses CWE-862
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-10-08T17:35:43.653Z

Reserved: 2026-09-18T19:12:29.649Z

Link: CVE-2026-93860

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-08T18:18:30.993

Modified: 2026-10-08T18:18:30.993

Link: CVE-2026-93860

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-08T19:15:20Z

Weaknesses