GHSA-7pm4-56h2-5rxr.json

{
  "schema_version": "1.4.0",
  "id": "GHSA-7pm4-56h2-5rxr",
  "modified": "2026-06-20T18:31:35Z",
  "published": "2026-06-20T18:31:29Z",
  "aliases": [
    "CVE-2026-5366"
  ],
  "summary": "Git Flag Injection via commit_sha and directories Parameters Leading to Remote Code Execution (RCE)",
  "details": "Prefect version <=3.6.24 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.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "prefect"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.25"
            }
          ]
        }
      ],
      "database_specific": {
        "last_known_affected_version_range": "<= 3.6.24"
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5366"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/prefecthq/prefect"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/e2e88a0f-a8f6-49c9-94c5-e98dc385f07a"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "severity": "CRITICAL",
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-20T17:16:26Z"
  }
}