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CVE-2026-18655

Estado: Pendiente de análisisAlta (7.1)—

Improper restriction of intended endpoints in the RabbitMQ broker connection tools of the Amazon MQ MCP Server (awslabs.amazon-mq-mcp-server) before 2.0.24 may allow a remote unauthenticated actor (via prompt injection) to obtain Amazon MQ for RabbitMQ broker credentials or OAuth access tokens sent to a crafted endpoint controlled through a broker hostname introduced in the MCP client context.

To remediate this issue, users should upgrade to version 2.0.24.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

UI:P (interacción del usuario requerida) + inyección de prompts sugiere ejecución en cliente. El impacto es acceso a credenciales RabbitMQ y tokens OAuth mediante redirección a endpoint controlado por atacante.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Application Developer GuidanceApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareActive Directory ConfigurationUser Training

Tecnologías afectadas (2)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Amazon — MQAIAwslabs — Amazon MQ MCP ServerAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-18655",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-18655",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-03T19:52:05.730514Z"
        }
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    "cvssMetricV31": [
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        "cvssData": {
          "scope": "UNCHANGED",
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          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
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          "confidentialityImpact": "HIGH"
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      }
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    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
        "cvssData": {
          "Safety": "NOT_DEFINED",
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          "Automatable": "NOT_DEFINED",
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          "valueDensity": "NOT_DEFINED",
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          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
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          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
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          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
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    ]
  },
  "affected": [
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "affectedData": [
        {
          "vendor": "AWS",
          "product": "amazon-mq-mcp-server",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "custom",
              "lessThanOrEqual": "2.0.23"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
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  ],
  "published": "2026-08-03T20:17:17.557",
  "references": [
    {
      "url": "https://aws.amazon.com/security/security-bulletins/2026-070-aws/",
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"
    },
    {
      "url": "https://github.com/awslabs/mcp/security/advisories/GHSA-xwj6-8x5h-hjp6",
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"
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      "url": "https://pypi.org/project/awslabs.amazon-mq-mcp-server/2.0.24/",
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"
    }
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  "vulnStatus": "Awaiting Analysis",
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      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "description": [
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          "lang": "en",
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        }
      ]
    }
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    {
      "lang": "en",
      "value": "Improper restriction of intended endpoints in the RabbitMQ broker connection tools of the Amazon MQ MCP Server (awslabs.amazon-mq-mcp-server) before 2.0.24 may allow a remote unauthenticated actor (via prompt injection) to obtain Amazon MQ for RabbitMQ broker credentials or OAuth access tokens sent to a crafted endpoint controlled through a broker hostname introduced in the MCP client context.\n\n\n\nTo remediate this issue, users should upgrade to version 2.0.24."
    }
  ],
  "lastModified": "2026-08-04T14:48:22.933",
  "sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5"
}