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TI-2026-69624 Aliases CVE-2026-93860GHSA-858j-2m97-g3qm

Missing authorization in OpenStack Mistral maintenance API

Priority MEDIUM 64CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-862.

Summary

OpenStack Mistral through 23.0.0 has a missing authorization flaw (CWE-862) in its /v2/maintenance API controller. The controller skips policy enforcement and calls the maintenance service directly, so no role check takes place. Any holder of a valid Mistral token, regardless of role, can read and change the 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.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00414 36th percentileScored 2026-11-07
Fix Partial Mistral (OpenStack): 20.1.1, 21.0.1, 22.0.1Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenStackMistralbefore 20.1.1; 21.0.0 to before 21.0.1; 22.0.0 to before 22.0.1; 23.0.020.1.1, 21.0.1, 22.0.1Patch availableCNA
  • Mistral VendorOpenStack Affected before 20.1.1; 21.0.0 to before 21.0.1; 22.0.0 to before 22.0.1; 23.0.0 Fixed in 20.1.1, 21.0.1, 22.0.1 Patch available CNA

Remediation

Upgrade OpenStack Mistral to 20.1.1, 21.0.1 or 22.0.1, the fixed versions for each release line. The sources list no fixed version for Red Hat OpenStack Platform 13 (Queens).

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Mistral (OpenStack) Fixed in 20.1.1, 21.0.1, 22.0.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    OpenStack Mistral 20.1.1, 21.0.1, 22.0.1

    4 records Highest priority Priority HIGH 2 HIGH, 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-69629 OpenStack Mistral flaw lets users change other projects' resourcesPriority HIGH 73
    • TI-2026-69623 Command injection in OpenStack Mistral std.ssh_proxied actionPriority HIGH 73
    • TI-2026-69625 Incorrect authorization in OpenStack Mistral exposes shared workflowsPriority LOW 26
    Show all 4 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenStack Platform 13 (Queens)AffectedNo fix planned: Out of support scope
Not affected: 1 product
  • Red Hat OpenStack Platform 16.2

Timeline

  1. 2026-10-08 Threatist record created from CVE-2026-93860
  2. 2026-10-09 Alias added: GHSA-858j-2m97-g3qm
  3. 2026-10-09 Affected versions changed · Red Hat
  4. 2026-10-09 CVSS score added · Red Hat
  5. 2026-10-09 CISA SSVC decision points changed
  6. 2026-10-10 Affected versions changed · Red Hat

References

Other 2

  • TI-2026-78562 Incorrect authorization in OpenStack Manila share operations CVSS 3.1CRITICAL 9.9
  • TI-2026-63467 Code injection in OpenStack Octavia CVSS 4.0CRITICAL 9.4
  • TI-2017-13226 The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before… CVSS 3.1CRITICAL 9.8
  • TI-2026-69629 OpenStack Mistral flaw lets users change other projects' resources CVSS 4.0HIGH 7.2
  • TI-2026-69623 Command injection in OpenStack Mistral std.ssh_proxied action CVSS 4.0HIGH 8.7
  • TI-2022-17779 Improper privilege management in OpenStack CVSS 3.1HIGH 8.8
See all 332 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences