CVE-2026-19244

{
  "id": "CVE-2026-19244",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-07T21:17:27.470",
  "lastModified": "2026-10-23T20:10:00.160",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was detected in HKUDS nanobot up to 0.2.1. The affected element is the function connect_mcp_servers of the file nanobot/agent/tools/mcp.py of the component MCP enabledTools Scope Handler. Performing a manipulation results in improper access controls. The attack is possible to be carried out remotely. The exploit is now public and may be used. Upgrading to version 0.3.0 is sufficient to fix this issue. The patch is named 4436. You should upgrade the affected component. Multiple issues were reported to the project. They reacted with a high level of professionalism and kindness: \"Both reports describe the same root cause: MCP resource and prompt wrappers could be registered outside the intended enabledTools scope. The registration boundary was corrected\"."
    },
    {
      "lang": "es",
      "value": "Se detectó una vulnerabilidad en HKUDS nanobot hasta la versión 0.2.1. El elemento afectado es la función connect_mcp_servers del archivo nanobot/agent/tools/mcp.py del componente MCP enabledTools Scope Handler. Realizar una manipulación resulta en controles de acceso inadecuados. El ataque puede llevarse a cabo de forma remota. El exploit ahora es público y puede ser utilizado. Actualizar a la versión 0.3.0 es suficiente para solucionar este problema. El parche se llama 4436. Debería actualizar el componente afectado. Se reportaron múltiples problemas al proyecto. Reaccionaron con un alto nivel de profesionalismo y amabilidad: ’Ambos informes describen la misma causa raíz: los envoltorios de recursos y de prompt de MCP podrían registrarse fuera del alcance previsto de enabledTools. Se corrigió el límite de registro’."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "HKUDS",
          "product": "nanobot",
          "cpes": [
            "cpe:2.3:a:nanobot:nanobot:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "MCP enabledTools Scope Handler"
          ],
          "versions": [
            {
              "version": "0.2.0",
              "status": "affected"
            },
            {
              "version": "0.2.1",
              "status": "affected"
            },
            {
              "version": "0.3.0",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "baseScore": 2.0,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnAvailabilityImpact": "LOW",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.4
      }
    ],
    "cvssMetricV2": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:M/C:P/I:P/A:P",
          "baseScore": 5.8,
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "MULTIPLE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL"
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 6.4,
        "impactScore": 6.4,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-07T20:49:44.451433Z",
          "id": "CVE-2026-19244",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-266"
        },
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://gist.github.com/YLChen-007/3de5f50d167a878f7530f57ed018d508",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/HKUDS/nanobot/",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/HKUDS/nanobot/issues/4435",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/HKUDS/nanobot/pull/4436",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/HKUDS/nanobot/releases/tag/v0.3.0",
      "source": "[email protected]"
    },
    {
      "url": "https://vuldb.com/cve/CVE-2026-19244",
      "source": "[email protected]"
    },
    {
      "url": "https://vuldb.com/submit/865116",
      "source": "[email protected]"
    },
    {
      "url": "https://vuldb.com/submit/865118",
      "source": "[email protected]"
    },
    {
      "url": "https://vuldb.com/vuln/386998",
      "source": "[email protected]"
    },
    {
      "url": "https://vuldb.com/vuln/386998/cti",
      "source": "[email protected]"
    }
  ]
}