CVE-2026-93860 OpenStack Mistral - Broken Access Control

OpenStack Mistral through 23.0.0 contains a broken access control caused by lack of policy enforcement in /v2/maintenance API controller, letting any valid token holder read and change cluster-wide maintenance state, exploit requires valid Mistral token.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.34% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Denial Of Service, Broken Access Control
CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
8 October 2026
Updated
15 October 2026
Weakness
CWE-862

Vendor fix

Update to a version later than 23.0.0 or apply patches that enforce proper policy checks.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs