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CVE-2026-44287

Estado: AplazadaMedia (6.3)—

FastGPT is an AI Agent building platform. Prior to 4.15.0-beta1, the JavaScript sandbox worker at projects/code-sandbox/src/pool/worker.ts:356 blocks dynamic import() with the regex /\bimport\s*\(/.test(code). JavaScript syntax accepts a block comment between import and (; the regex matches only ASCII whitespace, and the bytes /, *, *, / are not in the \s character class. The payload import/**/("child_process") parses as a syntactically valid dynamic import that the regex does not detect. Because import() is not wrapped by the safeRequire Proxy (which only proxies require), the attacker loads child_process and calls execSync - arbitrary command execution as uid=100(sandbox) inside the sandbox container. This vulnerability is fixed in 4.15.0-beta1.

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.

Fastgpt — FastgptAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-44287",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-44287",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-01T13:53:29.529997Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "labring",
          "product": "FastGPT",
          "versions": [
            {
              "status": "affected",
              "version": "< 4.15.0-beta1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-05-29T20:16:24.243",
  "references": [
    {
      "url": "https://github.com/labring/FastGPT/security/advisories/GHSA-f5mq-qxm4-5mvc",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/labring/FastGPT/security/advisories/GHSA-f5mq-qxm4-5mvc",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        },
        {
          "lang": "en",
          "value": "CWE-184"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "FastGPT is an AI Agent building platform. Prior to 4.15.0-beta1, the JavaScript sandbox worker at projects/code-sandbox/src/pool/worker.ts:356 blocks dynamic import() with the regex /\\bimport\\s*\\(/.test(code). JavaScript syntax accepts a block comment between import and (; the regex matches only ASCII whitespace, and the bytes /, *, *, / are not in the \\s character class. The payload import/**/(\"child_process\") parses as a syntactically valid dynamic import that the regex does not detect. Because import() is not wrapped by the safeRequire Proxy (which only proxies require), the attacker loads child_process and calls execSync - arbitrary command execution as uid=100(sandbox) inside the sandbox container. This vulnerability is fixed in 4.15.0-beta1."
    },
    {
      "lang": "es",
      "value": "FastGPT es una plataforma de creación de agentes de IA. Antes de 4.15.0-beta1, el worker de JavaScript del sandbox en projects/code-sandbox/src/pool/worker.ts:356 bloquea la importación dinámica import() con la expresión regular /\\bimport\\s*\\(/.test(code). La sintaxis de JavaScript acepta un comentario de bloque entre import y (; la expresión regular solo coincide con espacios en blanco ASCII, y los bytes /, *, *, / no están en la clase de caracteres \\s. La carga útil import/**/(\"child_process\") se analiza como una importación dinámica sintácticamente válida que la expresión regular no detecta. Debido a que import() no está envuelto por el Proxy safeRequire (que solo proxyfica require), el atacante carga child_process y llama a execSync - ejecución de comandos arbitrarios como uid=100(sandbox) dentro del contenedor del sandbox. Esta vulnerabilidad está corregida en 4.15.0-beta1."
    }
  ],
  "lastModified": "2026-07-22T06:10:00.170",
  "sourceIdentifier": "security-advisories@github.com"
}