CVE-2026-55830

{
  "id": "CVE-2026-55830",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-08T22:17:15.653",
  "lastModified": "2026-10-25T17:10:00.197",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "RestrictedPython is a tool that helps to define a subset of the Python language which allows to provide a program input into a trusted environment. Prior to 8.3, check_function_argument_names() rejected protected guard hook names for regular, variadic, and keyword-only arguments but omitted positional-only arguments, allowing __getattr__, _getitem_, _write_, or _print_ to be shadowed by a local parameter and bypass the embedding application's access policy. This issue is fixed in version 8.3."
    },
    {
      "lang": "es",
      "value": "RestrictedPython es una herramienta que ayuda a definir un subconjunto del lenguaje Python que permite proporcionar una entrada de programa en un entorno de confianza. Antes de la versión 8.3, check_function_argument_names() rechazaba los nombres de ’hook’ de guardia protegidos para argumentos regulares, variádicos y de solo palabra clave, pero omitía los argumentos de solo posición, permitiendo que __getattr__, _getitem_, _write_ o _print_ fueran sombreados por un parámetro local y eludieran la política de acceso de la aplicación embebida. Este problema se corrige en la versión 8.3."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "zopefoundation",
          "product": "RestrictedPython",
          "versions": [
            {
              "version": "< 8.3",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L",
          "baseScore": 8.3,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 1.7,
        "impactScore": 6.0
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-09T13:46:05.231227Z",
          "id": "CVE-2026-55830",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-184"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/zopefoundation/RestrictedPython/commit/3737596ec9f28c34a073cc845bd2f4c0a80cb671",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-ffg3-p8fm-mjx2",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-ffg3-p8fm-mjx2",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}