Vulnerability/
https://seclists.org/oss-sec/2026/q4/103

https://seclists.org/oss-sec/2026/q4/103: [OSSA-2026-044] OpenStack Mistral: Four authorization and privilege vulnerabilities in Mistral (CVE-2026-93858, CVE-2026-93860, CVE-2026-93861, CVE-2026-97147))

Q: Which Mistral deployments should be treated as affected?

Deployments running a version earlier than 20.1.1, or exactly 21.0.0, 22.0.0, or 23.0.0, are listed as affected.

Q: Are patches available for maintained release branches?

The advisory lists patch sets for the 2025.1/epoxy and 2025.2/flamingo branches. Review and apply the relevant patch set for the branch in use.

Published Oct 8, 2026

Updated

Affected Software

1 affected component

Openstack Mistral<20.1.1, =21.0.0, =22.0.0, =23.0.0

Frequently Asked Questions

Which Mistral deployments should be treated as affected?

Deployments running a version earlier than 20.1.1, or exactly 21.0.0, 22.0.0, or 23.0.0, are listed as affected.

Are patches available for maintained release branches?

The advisory lists patch sets for the 2025.1/epoxy and 2025.2/flamingo branches. Review and apply the relevant patch set for the branch in use.

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