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CVE-2026-18348

Full vulnerability record from the local CVENow database.

Description

Missing authorization check in the upload_azure, upload_sftp, and upload_smb VQL plugins allows an authenticated analyst-role user can initiate attacker-controlled outbound network connections from the Velociraptor server, bypassing the NETWORK ACL permission boundary. This enables internal network reconnaissance via port oracle and potential data exfiltration to external endpoints.

Severity
MEDIUM
CVSS score
4.1 (v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
Published
2026-08-11 06:17:13.287000
Last modified
2026-10-23 19:10:00.167000
View original CVE JSON
{
  "id": "CVE-2026-18348",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-11T06:17:13.287",
  "lastModified": "2026-10-23T19:10:00.167",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Missing authorization check in the upload_azure, upload_sftp, and upload_smb VQL plugins allows an authenticated analyst-role user can initiate attacker-controlled outbound network connections from the Velociraptor server, bypassing the NETWORK ACL permission boundary. This enables internal network reconnaissance via port oracle and potential data exfiltration to external endpoints."
    },
    {
      "lang": "es",
      "value": "Falta de verificación de autorización en los plugins VQL upload_azure, upload_sftp y upload_smb permite que un usuario autenticado con rol de analista pueda iniciar conexiones de red salientes controladas por el atacante desde el servidor Velociraptor, eludiendo el límite de permisos de la ACL DE RED. Esto permite el reconocimiento de red interno a través de oráculo de puerto y la posible exfiltración de datos a puntos finales externos."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Rapid7",
          "product": "Velociraptor",
          "defaultStatus": "unaffected",
          "packageName": "Velociraptor",
          "platforms": [
            "Linux"
          ],
          "repo": "https://github.com/Velocidex/velociraptor/",
          "versions": [
            {
              "version": "0",
              "lessThan": "0.77.2",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N",
          "baseScore": 4.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-11T14:21:58.567744Z",
          "id": "CVE-2026-18348",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "http://docs.velociraptor.app/announcements/advisories/cve-2026-18348/",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/Velocidex/velociraptor/commit/48824fb51a2bdba832abc281e719ecbed74736df",
      "source": "[email protected]"
    }
  ]
}