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CVE-2026-126838

🗓️ 12 Nov 2026 18:46:40Reported by mongodbType 
cve
 cve
🔗 web.nvd.nist.gov👁 13 Views

Rust Driver public Client Debug output exposes CSFLE KMS master-key material.

Related
Detection
Affected
Refs
Vulners
Node
OR
mongodbrust_driverRange3.9.0–3.9.1mongodb
mongodbrust_driverRange3.8.0–3.8.2mongodb
mongodbrust_driverRange3.5.0–3.5.2mongodb
mongodbrust_driverRange3.4.0–3.4.1mongodb
mongodbrust_driverRange3.2.0–3.2.5mongodb
mongodbrust_driverRange3.1.0–3.1.1mongodb
mongodbrust_driverRange3.0.0–3.0.1mongodb
mongodbrust_driverRange2.8.0–2.8.2mongodb
mongodbrust_driverRange2.7.0–2.7.1mongodb
mongodbrust_driverRange2.6.0–2.6.1mongodb
[
  {
    "vendor": "MongoDB",
    "product": "Rust Driver",
    "versions": [
      {
        "status": "affected",
        "version": "3.9.0",
        "lessThan": "3.9.1",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.8.0",
        "lessThan": "3.8.2",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.7.0",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.6.0",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.5.0",
        "lessThan": "3.5.2",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.4.0",
        "lessThan": "3.4.1",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.3.0",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.2.0",
        "lessThan": "3.2.5",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.1.0",
        "lessThan": "3.1.1",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.0.0",
        "lessThan": "3.0.1",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "2.8.0",
        "lessThan": "2.8.2",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "2.7.0",
        "lessThan": "2.7.1",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "2.6.0",
        "lessThan": "2.6.1",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "2.5.0",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "2.4.0",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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13 Nov 2026 17:17Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.5
CVSS 45.7
EPSS0.00073
13