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FKIE_CVE-2026-19244

Vulnerability from fkie_nvd - Published: 2026-08-07 21:17 - Updated: 2026-08-12 21:00
Severity
4.7 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Summary
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".
References
cna@vuldb.comhttps://gist.github.com/YLChen-007/3de5f50d167a878f7530f57ed018d508
cna@vuldb.comhttps://github.com/HKUDS/nanobot/
cna@vuldb.comhttps://github.com/HKUDS/nanobot/issues/4435
cna@vuldb.comhttps://github.com/HKUDS/nanobot/pull/4436
cna@vuldb.comhttps://github.com/HKUDS/nanobot/releases/tag/v0.3.0
cna@vuldb.comhttps://vuldb.com/cve/CVE-2026-19244
cna@vuldb.comhttps://vuldb.com/submit/865116
cna@vuldb.comhttps://vuldb.com/submit/865118
cna@vuldb.comhttps://vuldb.com/vuln/386998
cna@vuldb.comhttps://vuldb.com/vuln/386998/cti
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:nanobot:nanobot:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "MCP enabledTools Scope Handler"
          ],
          "product": "nanobot",
          "vendor": "HKUDS",
          "versions": [
            {
              "status": "affected",
              "version": "0.2.0"
            },
            {
              "status": "affected",
              "version": "0.2.1"
            },
            {
              "status": "unaffected",
              "version": "0.3.0"
            }
          ]
        }
      ],
      "source": "cna@vuldb.com"
    }
  ],
  "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\"."
    }
  ],
  "id": "CVE-2026-19244",
  "lastModified": "2026-08-12T21:00:37.147",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "MULTIPLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:M/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 6.4,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.4,
        "source": "cna@vuldb.com",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 2.0,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-19244",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-07T20:49:44.451433Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-07T21:17:27.470",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://gist.github.com/YLChen-007/3de5f50d167a878f7530f57ed018d508"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/HKUDS/nanobot/"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/HKUDS/nanobot/issues/4435"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/HKUDS/nanobot/pull/4436"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/HKUDS/nanobot/releases/tag/v0.3.0"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-19244"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/865116"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/865118"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/386998"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/386998/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-266"
        },
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Primary"
    }
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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