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CVE-2026-57439

Estado: AplazadaMedia (5)—

CyberChef is a web app for encryption, encoding, compression, and data analysis. Prior to 11.2.0, the Series Chart operation accepts __proto__ as a key while parsing user-supplied CSV, allowing prototype pollution that can be chained with operations such as Parse UDP to inject malicious JavaScript into HTML output. This issue is fixed in version 11.2.0.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Gchq — CyberchefAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-57439",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-57439",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-08T16:12:11.872931Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "gchq",
          "product": "CyberChef",
          "versions": [
            {
              "status": "affected",
              "version": "< 11.2.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-07-08T16:16:31.280",
  "references": [
    {
      "url": "https://github.com/gchq/CyberChef/commit/85db3be5d0096859b810f0e8d3e151d5dc9b948f",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/gchq/CyberChef/issues/2568",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/gchq/CyberChef/pull/2569",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/gchq/CyberChef/releases/tag/v11.2.0",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/gchq/CyberChef/security/advisories/GHSA-fx6f-382r-j72c",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/gchq/CyberChef/security/advisories/GHSA-fx6f-382r-j72c",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        },
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "CyberChef is a web app for encryption, encoding, compression, and data analysis. Prior to 11.2.0, the Series Chart operation accepts __proto__ as a key while parsing user-supplied CSV, allowing prototype pollution that can be chained with operations such as Parse UDP to inject malicious JavaScript into HTML output. This issue is fixed in version 11.2.0."
    }
  ],
  "lastModified": "2026-07-10T17:56:00.910",
  "sourceIdentifier": "security-advisories@github.com"
}