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CVE-2026-93860

HIGH 7.1

Published 2026-10-08 · Last modified 2026-10-09

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.

ELEVATED IMPACT

Severe if exploited (CVSS 7.1), but no known exploitation and low modeled probability. Patch on a normal cadence.

Exploitation likelihood

0.4%chance of exploitation in 30 days · 35th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

7.1CVSS 4.0 · HIGH

  • ConfidentialityNone
  • IntegrityNone
  • AvailabilityHigh

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ⚠Privileges: Requires a low-privilege account
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable
  • ✓Requirements: No special attack requirements

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Openstack

Products Mistral

Weakness (CWE)

  • CWE-862: Missing Authorization

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

References and research data (JSON)

Vendor product assessments

  • openstack-mistral-all as a component of Red Hat OpenStack Platform 13 (Queens) · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/openstack-mistral-all

    • workaround: No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.
    • no fix planned: Out of support scope
    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral-api as a component of Red Hat OpenStack Platform 13 (Queens) · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/openstack-mistral-api

    • workaround: No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.
    • no fix planned: Out of support scope
    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral-common as a component of Red Hat OpenStack Platform 13 (Queens) · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/openstack-mistral-common

    • workaround: No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.
    • no fix planned: Out of support scope
    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral-engine as a component of Red Hat OpenStack Platform 13 (Queens) · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/openstack-mistral-engine

    • workaround: No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.
    • no fix planned: Out of support scope
    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral-event-engine as a component of Red Hat OpenStack Platform 13 (Queens) · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/openstack-mistral-event-engine

    • workaround: No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.
    • no fix planned: Out of support scope
    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral-executor as a component of Red Hat OpenStack Platform 13 (Queens) · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/openstack-mistral-executor

    • workaround: No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.
    • no fix planned: Out of support scope
    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral.src as a component of Red Hat OpenStack Platform 13 (Queens) · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/openstack-mistral?arch=src

    • workaround: No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.
    • no fix planned: Out of support scope
    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • python-mistral as a component of Red Hat OpenStack Platform 13 (Queens) · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/python-mistral

    • workaround: No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.
    • no fix planned: Out of support scope
    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • python-mistral-tests as a component of Red Hat OpenStack Platform 13 (Queens) · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/python-mistral-tests

    • workaround: No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.
    • no fix planned: Out of support scope
    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral-all as a component of Red Hat OpenStack Platform 16.2 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/openstack-mistral-all

    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral-api as a component of Red Hat OpenStack Platform 16.2 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/openstack-mistral-api

    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral-common as a component of Red Hat OpenStack Platform 16.2 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/openstack-mistral-common

    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral-engine as a component of Red Hat OpenStack Platform 16.2 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/openstack-mistral-engine

    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral-event-engine as a component of Red Hat OpenStack Platform 16.2 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/openstack-mistral-event-engine

    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral-executor as a component of Red Hat OpenStack Platform 16.2 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/openstack-mistral-executor

    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • openstack-mistral-notifier as a component of Red Hat OpenStack Platform 16.2 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/openstack-mistral-notifier

    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00
  • python3-mistral as a component of Red Hat OpenStack Platform 16.2 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/python3-mistral

    Red Hat · CVE-2026-93860 · Updated 2026-10-09T16:42:42+00:00

All CVSS metrics

  • HIGH 7.1 v4.0 · CNA Primary
    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
  • HIGH 7.1 v4.0 · NVD Secondary
    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

References

Exploit-tagged references (not proof of a PoC)

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS