CVE-2026-93860 (GCVE-0-2026-93860)

Vulnerability from cvelistv5 – Published: 2026-10-08 17:35 – Updated: 2026-10-08 17:35
VLAI
Summary
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.
Severity
7.1 (High)
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
CWE
Assigner
mitre CNA under the mitre root
CNA scorecard E 27/100 over 2373 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
OpenStack Mistral Affected: 0 , < 20.1.1 (semver)
Affected: 21.0.0 , < 21.0.1 (semver)
Affected: 22.0.0 , < 22.0.1 (semver)
Affected: 23.0.0 (semver)
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        }
      ],
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
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            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "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",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "descriptions": [
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              "description": "CWE-862 Missing Authorization",
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              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
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        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
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        {
          "tags": [
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          ],
          "url": "https://launchpad.net/bugs/2162789"
        },
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          "url": "https://security.openstack.org/ossa/OSSA-2026-044.html"
        }
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  "cveMetadata": {
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    "assignerShortName": "mitre",
    "cveId": "CVE-2026-93860",
    "datePublished": "2026-10-08T17:35:43.653Z",
    "dateReserved": "2026-09-18T19:12:29.649Z",
    "dateUpdated": "2026-10-08T17:35:43.653Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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  "vulnerability-lookup:meta": {
    "nvd": {
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                "product": "Mistral",
                "repo": "https://opendev.org/openstack/mistral",
                "vendor": "OpenStack",
                "versions": [
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                    "version": "22.0.0",
                    "versionType": "semver"
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                    "versionType": "semver"
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            ],
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "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\u0027s 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."
          }
        ],
        "id": "CVE-2026-93860",
        "lastModified": "2026-10-08T21:10:41.427",
        "metrics": {
          "cvssMetricV40": [
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                "Recovery": "NOT_DEFINED",
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                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "LOW",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "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",
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                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
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        },
        "published": "2026-10-08T18:18:30.993",
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        "vulnStatus": "Deferred",
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    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-08T23:35:42+00:00",
      "cve": "CVE-2026-93860",
      "id": "CVE-2026-93860",
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      "product_status:known_affected": "9",
      "product_status:under_investigation": "8",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "openstack-mistral: mistral: Unauthenticated-project user can trigger global maintenance mode causing cross-tenant denial of service",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93860.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.