{
  "affected": [
    {
      "affectedData": [
        {
          "product": "prefecthq/prefect",
          "vendor": "prefecthq",
          "versions": [
            {
              "lessThanOrEqual": "latest",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@huntr.dev"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:prefect:prefect:3.6.23:-:*:*:*:*:*:*",
              "matchCriteriaId": "8305547A-5D60-463F-8056-82B8F68F91CB",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Prefect version 3.6.23 is vulnerable to remote code execution due to improper handling of user-controlled input in the `GitRepository` storage class. The `commit_sha` parameter, which is passed to git commands, lacks validation and does not include a `--` separator to distinguish user input from git flags. This allows attackers to inject arbitrary git flags, such as `--upload-pack`, enabling execution of external programs. Additionally, the `directories` parameter can be exploited to inject git flags during sparse-checkout operations. These vulnerabilities allow any user with deployment creation permissions to execute arbitrary commands on worker machines, compromising shared work pools in multi-tenant environments."
    },
    {
      "lang": "es",
      "value": "La versi\u00f3n 3.6.23 de Prefect es vulnerable a ejecuci\u00f3n remota de c\u00f3digo debido a un manejo inadecuado de la entrada controlada por el usuario en la clase de almacenamiento \u2019GitRepository\u2019. El par\u00e1metro \u2019commit_sha\u2019, que se pasa a los comandos de git, carece de validaci\u00f3n y no incluye un separador \u2019--\u2019 para distinguir la entrada del usuario de las banderas de git. Esto permite a los atacantes inyectar banderas de git arbitrarias, como \u2019--upload-pack\u2019, lo que permite la ejecuci\u00f3n de programas externos. Adem\u00e1s, el par\u00e1metro \u2019directories\u2019 puede ser explotado para inyectar banderas de git durante operaciones de sparse-checkout. Estas vulnerabilidades permiten a cualquier usuario con permisos de creaci\u00f3n de despliegues ejecutar comandos arbitrarios en m\u00e1quinas de trabajo, comprometiendo los pools de trabajo compartidos en entornos multi-inquilino."
    }
  ],
  "id": "CVE-2026-5366",
  "lastModified": "2026-10-25T23:10:00.167",
  "metrics": {
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.9,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.0,
        "source": "security@huntr.dev",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-5366",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-22T17:24:58.249220Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-20T17:16:26.560",
  "references": [
    {
      "source": "security@huntr.dev",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://huntr.com/bounties/e2e88a0f-a8f6-49c9-94c5-e98dc385f07a"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://huntr.com/bounties/e2e88a0f-a8f6-49c9-94c5-e98dc385f07a"
    }
  ],
  "sourceIdentifier": "security@huntr.dev",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ],
      "source": "security@huntr.dev",
      "type": "Secondary"
    }
  ]
}