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CVE-2026-9743

Estado: AnalizadaAlta (7.1)—

In MongoDB Server 8.0, an aggregation stage can leave its _subPipeline field null during processing of certain pipelines. If a getMore is subsequently issued on the same cursor, the server may dereference this null sub-pipeline when reattaching to the operation context, accessing an invalid address and crashing the process. This issue allows an authenticated user who can run aggregation pipelines to cause a denial of service by issuing a specially crafted aggregation followed by getMore on affected versions.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Requiere acceso autenticado a servicio remoto MongoDB (PR:L, AV:N); impacto: DoS por crash del proceso mediante cursor malformado con getMore.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability ScanningThreat Intelligence ProgramPrivileged Account ManagementNetwork SegmentationFilter Network TrafficDisable or Remove Feature or Program

Tecnologías afectadas (1)

Mongodb — Mongodb

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-9743",
  "cveTags": [],
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        "ssvcData": {
          "id": "CVE-2026-9743",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
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          "version": "2.0.3",
          "timestamp": "2026-06-10T13:50:38.997985Z"
        }
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          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
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        "type": "Secondary",
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          "valueDensity": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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      "affectedData": [
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              "version": "8.0.0",
              "lessThan": "8.0.24",
              "versionType": "semver"
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  "published": "2026-06-09T23:17:03.853",
  "references": [
    {
      "url": "https://jira.mongodb.org/browse/SERVER-123688",
      "tags": [
        "Vendor Advisory"
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      "source": "cna@mongodb.com"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cna@mongodb.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In MongoDB Server 8.0, an aggregation stage can leave its _subPipeline field null during processing of certain pipelines. If a getMore is subsequently issued on the same cursor, the server may dereference this null sub-pipeline when reattaching to the operation context, accessing an invalid address and crashing the process. This issue allows an authenticated user who can run aggregation pipelines to cause a denial of service by issuing a specially crafted aggregation followed by getMore on affected versions."
    },
    {
      "lang": "es",
      "value": "En el servidor MongoDB 8.0, una etapa de agregación puede dejar su campo _subPipeline nulo durante el procesamiento de ciertas canalizaciones. Si posteriormente se emite un getMore en el mismo cursor, el servidor puede desreferenciar esta sub-canalización nula al volver a adjuntarse al contexto de la operación, accediendo a una dirección inválida y bloqueando el proceso. Este problema permite a un usuario autenticado que puede ejecutar canalizaciones de agregación causar una denegación de servicio al emitir una agregación especialmente diseñada seguida de un getMore en las versiones afectadas."
    }
  ],
  "lastModified": "2026-07-23T09:10:00.113",
  "configurations": [
    {
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          "operator": "OR"
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  "sourceIdentifier": "cna@mongodb.com"
}