Vulnerability · Published Oct 8, 2026 · Assigned by mitre
CVE-2026-93860
High 7.1
In plain English
A high-severity missing authorization in Mistral from OpenStack. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
In OpenStack Mistral through 23.0.0, the /v2/maintenance API controller clears the request context and calls the maintenance service directly without any policy enforcement. Any holder of a valid Mistral token, regardless of assigned role, can read and change the service's cluster-wide maintenance state. Setting the state to PAUSED stops processing of new workflow and execution objects across all tenant projects until an operator restores it.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mistral | no fix listed | DEBIAN-CVE-2026-93860 |
| Debian:13 | mistral | no fix listed | DEBIAN-CVE-2026-93860 |
| Debian:14 | mistral | 23.0.0-2 | DEBIAN-CVE-2026-93860 |
| Ubuntu:22.04:LTS | mistral | no fix listed | UBUNTU-CVE-2026-93860 |
| Ubuntu:24.04:LTS | mistral | no fix listed | UBUNTU-CVE-2026-93860 |
| Ubuntu:26.04:LTS | mistral | no fix listed | UBUNTU-CVE-2026-93860 |
| Ubuntu:26.10 | mistral | no fix listed | UBUNTU-CVE-2026-93860 |
Affected products (as reported)
Weakness: CWE-862 · 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