{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:prefect:prefect:3.6.23:-:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "3.6.23-NA"
              },
              {
                "last_affected": "3.6.23-NA"
              }
            ],
            "source": "CPE_STRING"
          },
          "events": [
            {
              "introduced": "db5763e0905ba1547e4c4d1105d5ba9ea46993d6"
            },
            {
              "last_affected": "db5763e0905ba1547e4c4d1105d5ba9ea46993d6"
            }
          ],
          "repo": "https://github.com/prefecthq/prefect",
          "type": "GIT"
        }
      ],
      "versions": [
        "3.6.23-NA"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "@huntr_ai",
    "cwe_ids": [
      "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5366.json"
  },
  "details": "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.",
  "id": "CVE-2026-5366",
  "modified": "2026-07-08T05:36:17.502461597Z",
  "published": "2026-06-20T16:43:37.345Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/e2e88a0f-a8f6-49c9-94c5-e98dc385f07a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5366.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5366"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Git Argument Injection in prefecthq/prefect"
}