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CVE-2026-84970

Estado: AnalizadaMedia (5.9)—

A numeric truncation weakness exists in the JSON parsing component of the MongoDB C++ Driver's BSON library. An actor who controls the text that an embedding application hands to the library's public JSON parsing interface, when that text is very large, can cause the library to read memory beyond the supplied buffer and return it to the caller, to silently accept only part of the input as a complete document, or to terminate the process. No MongoDB server, credentials, or non-default configuration is required; the effect is confined to the process that uses the library.

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)

Mongodb — C++ Driver

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-84970",
  "cveTags": [],
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          "options": [
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          "version": "2.0.3",
          "timestamp": "2026-09-03T15:14:39.689908Z"
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          "modifiedUserInteraction": "NOT_DEFINED",
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          "modifiedPrivilegesRequired": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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      "affectedData": [
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          "product": "C++ Driver",
          "versions": [
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              "version": "3.2.0",
              "lessThan": "4.5.2",
              "versionType": "semver"
            }
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  "published": "2026-09-03T15:17:36.403",
  "references": [
    {
      "url": "https://jira.mongodb.org/browse/CXX-3547",
      "tags": [
        "Vendor Advisory",
        "Issue Tracking"
      ],
      "source": "cna@mongodb.com"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "cna@mongodb.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-681"
        }
      ]
    }
  ],
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      "lang": "en",
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    }
  ],
  "lastModified": "2026-09-10T19:47:31.733",
  "configurations": [
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            }
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}