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CVE-2026-84965

Estado: AnalizadaMedia (5.9)—

An integer wraparound in an allocation size calculation in the BSON library's JSON parsing code can cause a buffer to be released while a following copy operation still writes through the stale pointer. On builds where sizes are 32 bits, an unauthenticated party able to supply a sufficiently large JSON input to an application that links the library may cause that application to terminate unexpectedly, resulting in denial of service.

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-2026-84965",
  "cveTags": [],
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          "options": [
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              "exploitation": "none"
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              "automatable": "no"
            },
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-09-03T15:43:02.927377Z"
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        "source": "nvd@nist.gov",
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          "exploitMaturity": "NOT_DEFINED",
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          "modifiedAttackVector": "NOT_DEFINED",
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          "modifiedUserInteraction": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
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      "affectedData": [
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          "vendor": "MongoDB",
          "product": "C Driver",
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              "lessThan": "1.30.9",
              "versionType": "semver"
            },
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              "version": "2.0.0",
              "lessThan": "2.5.2",
              "versionType": "semver"
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          ],
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  "published": "2026-09-03T16:18:25.417",
  "references": [
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      "url": "https://jira.mongodb.org/browse/CDRIVER-6405",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cna@mongodb.com"
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  "weaknesses": [
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      "source": "cna@mongodb.com",
      "description": [
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          "lang": "en",
          "value": "CWE-190"
        }
      ]
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  ],
  "lastModified": "2026-09-22T16:00:19.730",
  "configurations": [
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}