FKIE_CVE-2026-43901

Vulnerability from fkie_nvd - Published: 2026-05-11 23:20 - Updated: 2026-10-26 18:10
Severity
6.8 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Summary
Wireshark MCP is an MCP Server that turns tshark into a structured analysis interface, then layers in optional Wireshark suite utilities. In 1.1.5 and earlier, wireshark-mcp exposes a wireshark_export_objects MCP tool that accepts an attacker-controlled dest_dir parameter and passes it to tshark's --export-objects flag with no mandatory path restriction. The path sandbox (_allowed_dirs) is None by default and only activates when the environment variable WIRESHARK_MCP_ALLOWED_DIRS is explicitly set. In a default installation, any directory on the filesystem can be used as the export destination.
References
security-advisories@github.comhttps://github.com/bx33661/Wireshark-MCP/security/advisories/GHSA-3r68-x3xc-rxpgExploit, Mitigation, Patch, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/bx33661/Wireshark-MCP/security/advisories/GHSA-3r68-x3xc-rxpgExploit, Mitigation, Patch, Vendor Advisory
Impacted products
Vendor Product Version
bx33661 wireshark_mcp *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Wireshark-MCP",
          "vendor": "bx33661",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 1.1.5"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:bx33661:wireshark_mcp:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C22F6C9B-ECFE-4450-93A4-C1047D82CD27",
              "versionEndIncluding": "1.1.5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Wireshark MCP is an MCP Server that turns tshark into a structured analysis interface, then layers in optional Wireshark suite utilities. In 1.1.5 and earlier, wireshark-mcp exposes a wireshark_export_objects MCP tool that accepts an attacker-controlled dest_dir parameter and passes it to tshark\u0027s --export-objects flag with no mandatory path restriction. The path sandbox (_allowed_dirs) is None by default and only activates when the environment variable WIRESHARK_MCP_ALLOWED_DIRS is explicitly set. In a default installation, any directory on the filesystem can be used as the export destination."
    },
    {
      "lang": "es",
      "value": "Wireshark MCP es un servidor MCP que convierte tshark en una interfaz de an\u00e1lisis estructurado, y luego incorpora utilidades opcionales de la suite Wireshark. En 1.1.5 y versiones anteriores, wireshark-mcp expone una herramienta MCP wireshark_export_objects que acepta un par\u00e1metro dest_dir controlado por el atacante y lo pasa al indicador --export-objects de tshark sin ninguna restricci\u00f3n de ruta obligatoria. La sandbox de ruta (_allowed_dirs) es None por defecto y solo se activa cuando la variable de entorno WIRESHARK_MCP_ALLOWED_DIRS se establece expl\u00edcitamente. En una instalaci\u00f3n por defecto, cualquier directorio en el sistema de archivos puede ser utilizado como destino de exportaci\u00f3n."
    }
  ],
  "id": "CVE-2026-43901",
  "lastModified": "2026-10-26T18:10:00.173",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-43901",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-13T14:28:15.407312Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-11T23:20:21.697",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://github.com/bx33661/Wireshark-MCP/security/advisories/GHSA-3r68-x3xc-rxpg"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://github.com/bx33661/Wireshark-MCP/security/advisories/GHSA-3r68-x3xc-rxpg"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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