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CVE-2026-14916

Estado: Pendiente de análisisAlta (7.7)—

A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible with the type of key used for verification.

As a result, an unauthenticated remote attacker may be able to craft a forged JWT that is incorrectly accepted as valid, leading to authentication bypass and potential compromise of confidentiality, integrity, and availability.

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.

Vulnerabilidad de validación JWT en API Gateway remota sin autenticación (AV:N/PR:N/UI:N). Permite forjar tokens válidos y bypasear autenticación (T1078), con riesgo de manipulación de datos (SC:H).

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

Privileged Account ManagementNetwork SegmentationApplication Developer GuidanceActive Directory ConfigurationVulnerability ScanningUser Training

Tecnologías afectadas (1)

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

Kong — Kong API Gateway EnterpriseAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-14916",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-14916",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-16T13:26:38.214554Z"
        }
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 7.7,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/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",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "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"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "affectedData": [
        {
          "vendor": "Kong",
          "product": "Kong Enteprise Gateway",
          "versions": [
            {
              "status": "affected",
              "version": "3.15.0.0",
              "lessThan": "3.15.0.3",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.14.0.0",
              "lessThan": "3.14.0.12",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.13.0.0",
              "lessThan": "3.13.0.9",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.12.0.0",
              "lessThan": "3.12.0.10",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.10.0.0",
              "lessThan": "3.10.0.17",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.4.0.0",
              "lessThan": "3.4.3.29",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "Linux"
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-09-16T11:16:40.503",
  "references": [
    {
      "url": "https://developer.konghq.com/gateway/changelog/",
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "description": [
        {
          "lang": "en",
          "value": "CWE-241"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible with the type of key used for verification.\n\n\n\nAs a result, an unauthenticated remote attacker may be able to craft a forged JWT that is incorrectly accepted as valid, leading to authentication bypass and potential compromise of confidentiality, integrity, and availability."
    }
  ],
  "lastModified": "2026-09-18T19:07:38.320",
  "sourceIdentifier": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"
}