CVE-2026-89419

Severity: medium (CVSS 5.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-23 · updated 2026-10-23
Weakness: CWE-424

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.

Affected products

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

How to fix

Upgrade to a fixed version: OpenStack Ironic 29.1.1, 32.1.1, 35.1.1, 39.0.1. Check the vendor advisory for mitigations.

References

https://bugs.launchpad.net/ironic/+bug/2166510
https://security.openstack.org/ossa/OSSA-2026-048.html
http://www.openwall.com/lists/oss-security/2026/10/22/7

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