7.1

CVE-2026-93860: openstack mistral Missing Authorization

CVSS: 7.1v4.0HighDeferred
AliasesDEBIAN-CVE-2026-93860UBUNTU-CVE-2026-93860
Published 08-10-2026Last modified 09-10-2026
Open JSON

Vulnerability summary

CVE-2026-93860 is a high (CVSS 7.1) Missing Authorization vulnerability in openstack mistral. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 26.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
38/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v4.0 (CVE.org)
EPSS score
0.34%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 08-10-2026
    PublishedVulnerability first disclosed.
  2. 09-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

26%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

09-10-202619-10-2026
EPSS score
0.34%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.launchpad.net)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • mistralAll versions (No fix recorded) | < 23.0.0-2
Openstack1 product
  • mistral< 20.1.1 | ≥ 21.0.0, < 21.0.1 | ≥ 22.0.0, < 22.0.1 | 23.0.0
Ubuntu1 product
  • mistralAll versions (No fix recorded)

3 vendors · 3 products

References

6 links