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CVE-2026-93860

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 Mist

OpenStack MistralContainers & cloud
Open in ThreatlineRecord JSON
CVSS
7.1High
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 9 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.34%Chance of exploitation activity in the next 30 days, higher than 26% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in20.1.1Also 21.0.1, 22.0.1CVE List
Published8 Oct 2026Updated 9 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 4

  • Mistralaffected: all versions before 20.1.1CVE List
  • Mistralaffected: 21.0.0 before 21.0.1CVE List
  • Mistralaffected: 22.0.0 before 22.0.1CVE List
  • Mistralaffected: 23.0.0CVE List

References 3