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CVE-2026-3655

Estado: AplazadaCrítica (9.8)—

The OTP Login With Phone Number, OTP Verification plugin for WordPress is vulnerable to authentication bypass in versions 1.8.50 through 1.8.60. This is due to the Firebase verification flow in the `lwp_ajax_register` AJAX handler not binding the Firebase session to the phone number supplied in the request. The `idehweb_lwp_activate_through_firebase()` function validates that a Firebase OTP session is legitimate, but the `phoneNumber` returned by Firebase is never compared against the victim's stored phone number. This makes it possible for unauthenticated attackers to authenticate as any user who has a phone number stored in user meta, including administrators, by verifying their own Firebase session and supplying the victim's phone number in the same request.

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 autenticación en aplicación web expuesta (AV:N, PR:N, UI:N). Bypass de verificación Firebase permite suplantación de cualquier usuario incluyendo administradores, logro tanto de T1078 (obtención de credenciales/cuenta válida) como escalada a privilegios administrativos (T1068).

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 ManagementApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareApplication Developer GuidanceActive Directory Configuration

Tecnologías afectadas (1)

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

OTP Login With Phone Number — OTP Login With Phone NumberAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-3655",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-3655",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-29T10:01:30.010604Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@wordfence.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@wordfence.com",
      "affectedData": [
        {
          "vendor": "glboy",
          "product": "OTP Login With Phone Number, OTP Verification",
          "versions": [
            {
              "status": "affected",
              "version": "1.8.50",
              "versionType": "semver",
              "lessThanOrEqual": "1.8.60"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-05-29T08:16:18.920",
  "references": [
    {
      "url": "https://plugins.trac.wordpress.org/browser/login-with-phone-number/tags/1.8.60/inc/ajax-handlers.php#L1167",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/login-with-phone-number/tags/1.8.60/inc/ajax-handlers.php#L649",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/login-with-phone-number/tags/1.8.60/inc/ajax-handlers.php#L659",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/login-with-phone-number/trunk/inc/ajax-handlers.php#L649",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/changeset/3479314/login-with-phone-number/trunk/inc/ajax-handlers.php?old=3455810&old_path=login-with-phone-number%2Ftrunk%2Finc%2Fajax-handlers.php",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/7fc410f2-5f2b-4eea-a0fb-fe58f988f95f?source=cve",
      "source": "security@wordfence.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@wordfence.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The OTP Login With Phone Number, OTP Verification plugin for WordPress is vulnerable to authentication bypass in versions 1.8.50 through 1.8.60. This is due to the Firebase verification flow in the `lwp_ajax_register` AJAX handler not binding the Firebase session to the phone number supplied in the request. The `idehweb_lwp_activate_through_firebase()` function validates that a Firebase OTP session is legitimate, but the `phoneNumber` returned by Firebase is never compared against the victim's stored phone number. This makes it possible for unauthenticated attackers to authenticate as any user who has a phone number stored in user meta, including administrators, by verifying their own Firebase session and supplying the victim's phone number in the same request."
    },
    {
      "lang": "es",
      "value": "El plugin OTP Login With Phone Number, OTP Verification para WordPress es vulnerable a omisión de autenticación en las versiones 1.8.50 a 1.8.60. Esto se debe a que el flujo de verificación de Firebase en el gestor AJAX 'lwp_ajax_register' no vincula la sesión de Firebase al número de teléfono proporcionado en la solicitud. La función 'idehweb_lwp_activate_through_firebase()' valida que una sesión OTP de Firebase es legítima, pero el 'phoneNumber' devuelto por Firebase nunca se compara con el número de teléfono almacenado de la víctima. Esto hace posible que atacantes no autenticados se autentiquen como cualquier usuario que tenga un número de teléfono almacenado en los metadatos del usuario, incluidos los administradores, al verificar su propia sesión de Firebase y proporcionar el número de teléfono de la víctima en la misma solicitud."
    }
  ],
  "lastModified": "2026-07-21T12:10:00.090",
  "sourceIdentifier": "security@wordfence.com"
}