What is CVE-2026-41283?

CVE-2026-41283 is a critical-severity vulnerability in Openstack Mistral, classified under Incorrect Authorization. CVSS score: 9.9/10. Published 2026-06-04.

How severe is CVE-2026-41283?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Auth bypass in Openstack Mistral

CVE-2026-41283

OpenStack Mistral through 22.0.0 allows Arbitrary Remote Code Execution when the API is exposed. There are endpoints that allow code execution, which can lead to exfiltration of service credentials.

Vulnerability class: Broken Access Control

EPSS: 0.002 (39.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Openstack Mistral — versions 20.0.0, 21.0.0, 22.0.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

cve@mitre.org
cve@mitre.org
af854a3a-2127-422b-91ae-364da2661108
cve@mitre.org

Frequently asked questions

What is CVE-2026-41283?: CVE-2026-41283 is a critical-severity vulnerability in Openstack Mistral, classified under Incorrect Authorization. CVSS score: 9.9/10. Published 2026-06-04.
How severe is CVE-2026-41283?: Critical severity. CVSS v3 base score is 9.9 out of 10.