{
  "affected": [
    {
      "affectedData": [
        {
          "product": "mlflow/mlflow",
          "vendor": "mlflow",
          "versions": [
            {
              "lessThan": "3.10.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@huntr.dev"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C8CA51FC-A1F9-4F91-B400-F7C9691394E0",
              "versionEndExcluding": "3.10.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In mlflow/mlflow versions up to 3.9.0, the `SearchModelVersions` REST API endpoint and the `mlflowSearchModelVersions` GraphQL query lack proper per-model authorization checks when basic authentication is enabled. This allows any authenticated user to enumerate all model versions across all registered models, regardless of their permission level. The issue arises due to the absence of `SearchModelVersions` in the `BEFORE_REQUEST_VALIDATORS` and `AFTER_REQUEST_HANDLERS` for the REST API, and its omission from `GraphQLAuthorizationMiddleware.PROTECTED_FIELDS` for GraphQL. This vulnerability can expose sensitive information such as model names, version descriptions, source URIs, tags, and other metadata, potentially revealing proprietary or confidential details in multi-tenant environments. The issue is resolved in version 3.10.0."
    },
    {
      "lang": "es",
      "value": "En las versiones de mlflow/mlflow hasta la 3.9.0, el endpoint de la API REST \u0027SearchModelVersions\u0027 y la consulta GraphQL \u0027mlflowSearchModelVersions\u0027 carecen de comprobaciones de autorizaci\u00f3n por modelo adecuadas cuando la autenticaci\u00f3n b\u00e1sica est\u00e1 habilitada. Esto permite a cualquier usuario autenticado enumerar todas las versiones de modelos en todos los modelos registrados, independientemente de su nivel de permiso. El problema surge debido a la ausencia de \u0027SearchModelVersions\u0027 en los \u0027BEFORE_REQUEST_VALIDATORS\u0027 y \u0027AFTER_REQUEST_HANDLERS\u0027 para la API REST, y su omisi\u00f3n de \u0027GraphQLAuthorizationMiddleware.PROTECTED_FIELDS\u0027 para GraphQL. Esta vulnerabilidad puede exponer informaci\u00f3n sensible como nombres de modelos, descripciones de versiones, URIs de origen, etiquetas y otros metadatos, revelando potencialmente detalles propietarios o confidenciales en entornos multi-inquilino. El problema se resuelve en la versi\u00f3n 3.10.0."
    }
  ],
  "id": "CVE-2026-2734",
  "lastModified": "2026-07-23T15:10:00.137",
  "metrics": {
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security@huntr.dev",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-2734",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-21T12:40:05.582361Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-21T05:16:22.723",
  "references": [
    {
      "source": "security@huntr.dev",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/mlflow/mlflow/commit/6989066af33fdcb03588fd71a1a67f8fc5ef12c9"
    },
    {
      "source": "security@huntr.dev",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://huntr.com/bounties/d632f783-b2c7-4a3b-af5e-1d693e841c08"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://huntr.com/bounties/d632f783-b2c7-4a3b-af5e-1d693e841c08"
    }
  ],
  "sourceIdentifier": "security@huntr.dev",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "security@huntr.dev",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}