FKIE_CVE-2026-3515

Vulnerability from fkie_nvd - Published: 2026-05-24 05:16 - Updated: 2026-07-23 17:10
Summary
A vulnerability in the `GitHubRepository` block of the `prefect-github` integration in Prefect version 3.6.18 allows an attacker to inject arbitrary git command-line options via the `reference` field. The `reference` field is concatenated directly into a `git clone` command string without proper sanitization, and then parsed by `shlex.split()`. This enables injection of options such as `-c`, leading to potential Server-Side Request Forgery (SSRF), credential theft, or remote code execution (RCE). The vulnerability affects both the `aget_directory()` and `get_directory()` methods in `src/integrations/prefect-github/prefect_github/repository.py`. This issue does not affect the GitLab and BitBucket integrations, which use a safer list-based command construction approach.
Impacted products
Vendor Product Version

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "prefecthq/prefect",
          "vendor": "prefecthq",
          "versions": [
            {
              "lessThanOrEqual": "latest",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@huntr.dev"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the `GitHubRepository` block of the `prefect-github` integration in Prefect version 3.6.18 allows an attacker to inject arbitrary git command-line options via the `reference` field. The `reference` field is concatenated directly into a `git clone` command string without proper sanitization, and then parsed by `shlex.split()`. This enables injection of options such as `-c`, leading to potential Server-Side Request Forgery (SSRF), credential theft, or remote code execution (RCE). The vulnerability affects both the `aget_directory()` and `get_directory()` methods in `src/integrations/prefect-github/prefect_github/repository.py`. This issue does not affect the GitLab and BitBucket integrations, which use a safer list-based command construction approach."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el bloque \u0027GitHubRepository\u0027 de la integraci\u00f3n \u0027prefect-github\u0027 en la versi\u00f3n 3.6.18 de Prefect permite a un atacante inyectar opciones arbitrarias de l\u00ednea de comandos de git a trav\u00e9s del campo \u0027reference\u0027. El campo \u0027reference\u0027 se concatena directamente en una cadena de comando \u0027git clone\u0027 sin una sanitizaci\u00f3n adecuada, y luego es analizado por \u0027shlex.split()\u0027. Esto permite la inyecci\u00f3n de opciones como \u0027-c\u0027, lo que lleva a una posible falsificaci\u00f3n de petici\u00f3n del lado del servidor (SSRF), robo de credenciales o ejecuci\u00f3n remota de c\u00f3digo (RCE). La vulnerabilidad afecta tanto a los m\u00e9todos \u0027aget_directory()\u0027 como \u0027get_directory()\u0027 en \u0027src/integrations/prefect-github/prefect_github/repository.py\u0027. Este problema no afecta a las integraciones de GitLab y BitBucket, que utilizan un enfoque de construcci\u00f3n de comandos basado en listas m\u00e1s seguro."
    }
  ],
  "id": "CVE-2026-3515",
  "lastModified": "2026-07-23T17:10:00.123",
  "metrics": {
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 4.7,
        "source": "security@huntr.dev",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-3515",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-26T15:08:15.183188Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-24T05:16:39.167",
  "references": [
    {
      "source": "security@huntr.dev",
      "url": "https://huntr.com/bounties/f3b048b8-7f4e-45ef-a5a7-cb841c39acde"
    }
  ],
  "sourceIdentifier": "security@huntr.dev",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-88"
        }
      ],
      "source": "security@huntr.dev",
      "type": "Secondary"
    }
  ]
}



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