CVE-2026-50589

OpenStack Ironic: Crafted JSON String to Certain Endpoints on the API or JSON-RPC Service May Result in Service Crash

5.3 MediumFix available

In OpenStack Ironic 32 before 37.0.0, an unauthenticated malicious user could submit a crafted JSON string to some endpoints on the API or JSON-RPC service and effect a service crash.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: Low

Exploit likelihood

0.43%Up 0.4 points since Jun 5, 2026

What each source reports

CVE List Score used 5.3

In OpenStack Ironic 32 before 37.0.0, an unauthenticated malicious user could submit a crafted JSON string to some endpoints on the API or JSON-RPC service and effect a service crash.

Record: CVE-2026-50589
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-770, CWE-502
Updated: 2026-11-02

EUVDEUVD-2026-34774 7.5

In OpenStack Ironic 32 before 37.0.0, an unauthenticated malicious user could submit a crafted JSON string to some endpoints on the API or JSON-RPC service and effect a service crash.

Record: EUVD-2026-34774
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-q3g8-rjrx-59ph 5.3

OpenStack Ironic: Crafted JSON String to Certain Endpoints on the API or JSON-RPC Service May Result in Service Crash

In OpenStack Ironic 32.0.0 through 35.0.1, an unauthenticated malicious user could submit a crafted JSON string to some endpoints on the API or JSON-RPC service and effect a service crash.

Record: GHSA-q3g8-rjrx-59ph
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-502, CWE-770
Updated: 2026-11-02

NVD 5.3

In OpenStack Ironic 32 before 37.0.0, an unauthenticated malicious user could submit a crafted JSON string to some endpoints on the API or JSON-RPC service and effect a service crash.

Record: CVE-2026-50589
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-770, CWE-502
Updated: 2026-11-02

OSV 5.3

In OpenStack Ironic 32 before 37.0.0, an unauthenticated malicious user could submit a crafted JSON string to some endpoints on the API or JSON-RPC service and effect a service crash.

Record: CVE-2026-50589
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-770
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-50589 7.5

In OpenStack Ironic 32 before 37.0.0, an unauthenticated malicious user could submit a crafted JSON string to some endpoints on the API or JSON-RPC service and effect a service crash.

Record: DEBIAN-CVE-2026-50589
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVGHSA-q3g8-rjrx-59ph 5.3

OpenStack Ironic: Crafted JSON String to Certain Endpoints on the API or JSON-RPC Service May Result in Service Crash

In OpenStack Ironic 32.0.0 through 35.0.1, an unauthenticated malicious user could submit a crafted JSON string to some endpoints on the API or JSON-RPC service and effect a service crash.

Record: GHSA-q3g8-rjrx-59ph
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-502, CWE-770
Updated: 2026-11-02

OSVPYSEC-2026-216 7.5

In OpenStack Ironic 32 before 37.0.0, an unauthenticated malicious user could submit a crafted JSON string to some endpoints on the API or JSON-RPC service and effect a service crash.

Record: PYSEC-2026-216
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-50589 5.3

In OpenStack Ironic 32 before 37.0.0, an unauthenticated malicious user could submit a crafted JSON string to some endpoints on the API or JSON-RPC service and effect a service crash.

Record: UBUNTU-CVE-2026-50589
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`ironic` PyPI	32.0.0 up to 37.0.0	37.0.0
`ironic` Debian:14	before 1:35.0.1-5, plus listed versions 1:29.0.0-71:32.0.0-11:32.0.0-21:32.0.0-41:32.0.0-5 Show 8 moreShow less 1:32.0.0-61:32.0.0-71:34.0.0-11:35.0.0-11:35.0.0-21:35.0.1-11:35.0.1-21:35.0.1-3	1:35.0.1-5
`ironic` PyPI	32.0.0 up to 37.0.0, plus listed versions 32.0.132.1.033.0.034.0.035.0.035.0.135.1.036.0.0	37.0.0
`ironic` PyPI	32.0.0 up to 37.0.0, plus listed versions 32.0.133.0.034.0.035.0.035.0.136.0.0	37.0.0
`ironic` Ubuntu:16.04:LTS	All versions, plus listed versions 1:4.2.0-0ubuntu11:4.3.0-0ubuntu11:5.1.0-0ubuntu11:5.1.2-0ubuntu1	None known
`ironic` Ubuntu:18.04:LTS	All versions, plus listed versions 1:9.1.0-0ubuntu21:9.2.0-0ubuntu11:10.0.0-0ubuntu11:10.1.0-0ubuntu11:10.1.1-0ubuntu11:10.1.1-0ubuntu2	None known
`ironic` Ubuntu:20.04:LTS	All versions, plus listed versions 1:13.0.1-0ubuntu11:14.0.0~b1~git2019121713.76597ca93-0ubuntu11:14.0.0~b1~git2019121713.76597ca93-0ubuntu21:14.0.0-0ubuntu11:14.0.1~git2020032415.de2d907fc-0ubuntu11:14.0.1~git2020041013.af9e6ba90-0ubuntu21:15.0.0-0ubuntu0.20.04.1	None known
`ironic` Ubuntu:22.04:LTS	All versions, plus listed versions 1:18.2.0-0ubuntu11:18.2.0+git2021120910.cdc3b9538-0ubuntu11:19.0.0+git2022011216.7beadee46-0ubuntu11:20.0.0+git2022030313.4e6a3d52e-0ubuntu11:20.1.0-0ubuntu11:20.1.0-0ubuntu1.11:20.1.0-0ubuntu1.21:20.1.0-0ubuntu1.3	None known
`ironic` Ubuntu:24.04:LTS	All versions, plus listed versions 1:23.0.0-0ubuntu31:23.1.0+git2024011916.a374a0c1-0ubuntu11:24.1.0-0ubuntu11:24.1.1-0ubuntu11:24.1.1-0ubuntu1.21:24.1.1-0ubuntu1.3	None known
`ironic` Ubuntu:25.10	All versions, plus listed versions 1:29.0.0-0ubuntu11:30.0.0+git2025070713.577833d78-0ubuntu11:30.0.0+git2025070713.577833d78-0ubuntu21:32.0.0-0ubuntu11:32.0.0-0ubuntu1.1	None known
`ironic` Ubuntu:26.10	All versions, plus listed versions 1:35.0.0-0ubuntu21:35.0.0-0ubuntu31:38.0.0+git20260818.101.f8e78b0-0ubuntu11:38.0.0+git2026091517.26c022f13-0ubuntu11:39.0.0-0ubuntu1	None known
`ironic` Ubuntu:26.04:LTS	All versions, plus listed versions 1:32.0.0-0ubuntu11:34.0.0-0ubuntu11:35.0.0-0ubuntu11:35.0.0-0ubuntu21:35.0.0-0ubuntu2.1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-50589 is a medium vulnerability (CVSS 5.3) in Openstack Ironic, published June 4, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 37th percentile. Fixed in ironic 37.0.0.

References

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