--- title: "CVE-2026-93860: OpenStack Mistral - Broken Access Control" description: "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." url: https://panop.io/threat-heartbeat/CVE-2026-93860/ --- # 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-93860) ## 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](https://cwe.mitre.org/data/definitions/862.html) ## 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 - [https://nvd.nist.gov/vuln/detail/CVE-2026-93860](https://nvd.nist.gov/vuln/detail/CVE-2026-93860) - [https://bugs.launchpad.net/ossa/+bug/2162789](https://bugs.launchpad.net/ossa/+bug/2162789) - [https://launchpad.net/bugs/2162789](https://launchpad.net/bugs/2162789) - [https://security.openstack.org/ossa/OSSA-2026-044.html](https://security.openstack.org/ossa/OSSA-2026-044.html) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)