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CVE-2026-18705

Estado: AnalizadaAlta (7.1)—

An issue in MongoDB Server's Atlas Vector Search feature could allow an authenticated user with read access to one view to retrieve documents from a different, protected view over the same underlying collection. This is due to insufficient handling of certain user-supplied fields when constructing an internal request forwarded to the search process.

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.

Acceso autenticado remoto (PR:L, AV:N, AC:L) a MongoDB para leer datos protegidos aprovechando fallo en validación de campos en Atlas Vector Search; CWE-807 (uso de parámetros de entrada no validados).

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

Tecnologías afectadas (1)

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-18705",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-18705",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-11T20:25:15.782249Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cna@mongodb.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "cna@mongodb.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 7.1,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "cna@mongodb.com",
      "affectedData": [
        {
          "vendor": "MongoDB",
          "product": "MongoDB Server",
          "versions": [
            {
              "status": "affected",
              "version": "8.3.0",
              "lessThan": "8.3.8",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "8.0",
              "lessThan": "8.0.29",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "7.0",
              "lessThan": "7.0.40",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-08-11T19:17:25.207",
  "references": [
    {
      "url": "https://jira.mongodb.org/browse/SERVER-129618",
      "tags": [
        "Vendor Advisory",
        "Issue Tracking"
      ],
      "source": "cna@mongodb.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cna@mongodb.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-807"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue in MongoDB Server's Atlas Vector Search feature could allow an authenticated user with read access to one view to retrieve documents from a different, protected view over the same underlying collection. This is due to insufficient handling of certain user-supplied fields when constructing an internal request forwarded to the search process."
    }
  ],
  "lastModified": "2026-09-16T15:19:18.490",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
              "vulnerable": true,
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              "versionEndExcluding": "7.0.40",
              "versionStartIncluding": "7.0.0"
            },
            {
              "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4DC64BC6-1D47-4809-9616-95A7CF59DC37",
              "versionEndExcluding": "8.0.29",
              "versionStartIncluding": "8.0.0"
            },
            {
              "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7BCD6B05-9FD5-4283-A2AC-8B625425597F",
              "versionEndIncluding": "8.2.12",
              "versionStartIncluding": "8.2.0"
            },
            {
              "criteria": "cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6EE4503A-F53C-432E-9DDB-F488DD989E8A",
              "versionEndExcluding": "8.3.8",
              "versionStartIncluding": "8.3.0"
            },
            {
              "criteria": "cpe:2.3:a:mongodb:mongodb:9.0.0:alpha0:*:*:-:-:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0FB52026-6C88-4401-84B5-3A070F0906D4"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "8D32A105-731C-493E-8CBF-639204CDAC7C"
            },
            {
              "criteria": "cpe:2.3:a:mongodb:mongodb:9.1.0:alpha0:*:*:-:-:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D56E512D-83F8-4D51-8690-E92F6A006822"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cna@mongodb.com"
}