FKIE_CVE-2025-13427

Vulnerability from fkie_nvd - Published: 2025-12-18 22:15 - Updated: 2026-09-30 16:10
Severity
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Summary
An authentication bypass vulnerability in Google Cloud Dialogflow CX Messenger allowed unauthenticated users to interact with restricted chat agents, gaining access to the agents' knowledge and the ability to trigger their intents, by manipulating initialization parameters or crafting specific API requests. All versions after August 20th, 2025 have been updated to protect from this vulnerability. No user action is required for this.
References
f45cbf4e-4146-4068-b7e1-655ffc2c548chttps://docs.cloud.google.com/dialogflow/docs/release-notes#December_11_2025
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Dialogflow CX Messenger",
          "vendor": "Google Cloud",
          "versions": [
            {
              "lessThanOrEqual": "2025-08-20",
              "status": "affected",
              "version": "0",
              "versionType": "date"
            }
          ]
        }
      ],
      "source": "f45cbf4e-4146-4068-b7e1-655ffc2c548c"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An authentication bypass vulnerability in Google Cloud Dialogflow CX Messenger allowed unauthenticated users to interact with restricted chat agents, gaining access to the agents\u0027 knowledge and the ability to trigger their intents, by manipulating initialization parameters or crafting specific API requests. \n\nAll versions after August 20th, 2025 have been updated to protect from this vulnerability. No user action is required for this."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de omisi\u00f3n de autenticaci\u00f3n en Google Cloud Dialogflow CX Messenger permiti\u00f3 a usuarios no autenticados interactuar con agentes de chat restringidos, obteniendo acceso al conocimiento de los agentes y la capacidad de activar sus intenciones, manipulando par\u00e1metros de inicializaci\u00f3n o elaborando solicitudes de API espec\u00edficas.\n\nTodas las versiones posteriores al 20 de agosto de 2025 han sido actualizadas para protegerse de esta vulnerabilidad. No se requiere ninguna acci\u00f3n del usuario para esto."
    }
  ],
  "id": "CVE-2025-13427",
  "lastModified": "2026-09-30T16:10:00.223",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.9,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "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": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "f45cbf4e-4146-4068-b7e1-655ffc2c548c",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-13427",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-12-19T15:13:24.619402Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-12-18T22:15:55.590",
  "references": [
    {
      "source": "f45cbf4e-4146-4068-b7e1-655ffc2c548c",
      "url": "https://docs.cloud.google.com/dialogflow/docs/release-notes#December_11_2025"
    }
  ],
  "sourceIdentifier": "f45cbf4e-4146-4068-b7e1-655ffc2c548c",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ],
      "source": "f45cbf4e-4146-4068-b7e1-655ffc2c548c",
      "type": "Secondary"
    }
  ]
}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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