FKIE_CVE-2025-55210

Vulnerability from fkie_nvd - Published: 2026-02-12 17:16 - Updated: 2026-02-13 14:23
Severity ?
2.0 (Low) - CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Summary
FreePBX is an open-source web-based graphical user interface (GUI) that manages Asterisk. Prior to 17.0.5 and 16.0.17, FreePBX module api (PBX API) is vulnerable to privilege escalation by authenticated users with REST/GraphQL API access. This vulnerability allows an attacker to forge a valid JWT with full access to the REST and GraphQL APIs on a FreePBX that they've already connected to, possibly as a lower privileged user. The JWT is signed using the api-oauth.key private key. An attacker can generate their own token if they possess this key (e.g., by accessing an affected instance), and specify any scopes they wish (e.g., rest, gql), bypassing traditional authorization checks. However, FreePBX enforces that the jti (JWT ID) claim must exist in the database (api_access_tokens table in the asterisk MySQL database) in order for the token to be accepted. Therefore, the attacker must know a jti value that already exists on the target instance. This vulnerability is fixed in 17.0.5 and 16.0.17.
References
security-advisories@github.comhttps://github.com/FreePBX/api/commit/bc6f7d72063cffb18babb6559fa351046d7ad19b
security-advisories@github.comhttps://github.com/FreePBX/api/commit/c16a3a79b83382fb4884e51174882ed635637002
security-advisories@github.comhttps://github.com/FreePBX/api/commit/d66786634e7e7d3eedcb4d0931b32c415ba6e9ef
security-advisories@github.comhttps://github.com/FreePBX/security-reporting/security/advisories/GHSA-gvgh-p7wj-76cf
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "FreePBX is an open-source web-based graphical user interface (GUI) that manages Asterisk. Prior to 17.0.5 and 16.0.17, FreePBX module api (PBX API) is vulnerable to privilege escalation by authenticated users with REST/GraphQL API access. This vulnerability allows an attacker to forge a valid JWT with full access to the REST and GraphQL APIs on a FreePBX that they\u0027ve already connected to, possibly as a lower privileged user. The JWT is signed using the api-oauth.key private key. An attacker can generate their own token if they possess this key (e.g., by accessing an affected instance), and specify any scopes they wish (e.g., rest, gql), bypassing traditional authorization checks. However, FreePBX enforces that the jti (JWT ID) claim must exist in the database (api_access_tokens table in the asterisk MySQL database) in order for the token to be accepted. Therefore, the attacker must know a jti value that already exists on the target instance. This vulnerability is fixed in 17.0.5 and 16.0.17."
    },
    {
      "lang": "es",
      "value": "FreePBX es una interfaz gr\u00e1fica de usuario (GUI) de c\u00f3digo abierto basada en web que gestiona Asterisk. Prior a 17.0.5 y 16.0.17, el m\u00f3dulo API de FreePBX (API de PBX) es vulnerable a escalada de privilegios por usuarios autenticados con acceso a la API REST/GraphQL. Esta vulnerabilidad permite a un atacante forjar un JWT v\u00e1lido con acceso completo a las API REST y GraphQL en un FreePBX al que ya se han conectado, posiblemente como un usuario con privilegios inferiores. El JWT est\u00e1 firmado usando la clave privada api-oauth.key. Un atacante puede generar su propio token si posee esta clave (por ejemplo, accediendo a una instancia afectada), y especificar cualquier \u00e1mbito que desee (por ejemplo, rest, gql), eludiendo las comprobaciones de autorizaci\u00f3n tradicionales. Sin embargo, FreePBX exige que la declaraci\u00f3n jti (ID de JWT) debe existir en la base de datos (tabla api_access_tokens en la base de datos MySQL de asterisk) para que el token sea aceptado. Por lo tanto, el atacante debe conocer un valor jti que ya exista en la instancia objetivo. Esta vulnerabilidad est\u00e1 corregida en 17.0.5 y 16.0.17."
    }
  ],
  "id": "CVE-2025-55210",
  "lastModified": "2026-02-13T14:23:48.007",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 2.0,
          "baseSeverity": "LOW",
          "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": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "ACTIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/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": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-12T17:16:04.963",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/FreePBX/api/commit/bc6f7d72063cffb18babb6559fa351046d7ad19b"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/FreePBX/api/commit/c16a3a79b83382fb4884e51174882ed635637002"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/FreePBX/api/commit/d66786634e7e7d3eedcb4d0931b32c415ba6e9ef"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/FreePBX/security-reporting/security/advisories/GHSA-gvgh-p7wj-76cf"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-270"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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