CVE-2026-9851
The Booking Package plugin for WordPress is vulnerable to Privilege Escalation via Account Takeover in versions up to, and including, 1.7.16. This is due to a missing capability check on the 'updateUser' branch of the package_app_action AJAX endpoint, where the handler only validates a nonce and the dispatcher invokes Schedule::updateUser() with the $administrator argument hard-coded to 1, bypassing the only owner-restriction check inside that function and allowing the target user to be determined solely by attacker-supplied input passed directly to wp_update_user().
Leer descripción completaMostrar menos
This makes it possible for authenticated attackers, with Editor-level access and above, to change the email address and password of any account, including Administrator accounts, resulting in a full site takeover.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.2
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.61%
- Percentil entre todas las CVEs puntuadas: 47
- Fecha de la puntuación: 6/10/2026
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.
- Explotación
T1210Exploitation of Remote Serviceslateral movement85 % - Impacto principal
T1098.002Additional Email Delegate Permissionspersistence · privilege escalation90 % - Impacto secundario
T1078.001Default Accountsstealth · persistence · privilege escalation · initial access90 % - Impacto secundario
T1098.001Additional Cloud Credentialspersistence · privilege escalation85 %
AJAX remoto (PR:H) sin validación de capability permite cambiar credenciales y email de cualquier cuenta (incluida Admin), logrando compromiso total del sitio mediante T1098 (modificación de cuentas) y acceso administrativo (T1078.001).
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
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-639
Referencias
- https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/index.php#L4416
- https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/index.php#L4477
- https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/lib/Schedule.php#L868
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3558752%40booking-package&new=3558752%40booking-package&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/795c1fd6-137b-4414-8d6b-30053bfb5924?source=cve
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-9851",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-9851",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-06-06T11:33:35.308170Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "security@wordfence.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.2,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "HIGH",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.2
}
]
},
"affected": [
{
"source": "security@wordfence.com",
"affectedData": [
{
"vendor": "masaakitanaka",
"product": "Booking Package",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "1.7.16"
}
],
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-06-06T05:16:30.047",
"references": [
{
"url": "https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/index.php#L4416",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/index.php#L4477",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/lib/Schedule.php#L868",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3558752%40booking-package&new=3558752%40booking-package&sfp_email=&sfph_mail=",
"source": "security@wordfence.com"
},
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/795c1fd6-137b-4414-8d6b-30053bfb5924?source=cve",
"source": "security@wordfence.com"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "security@wordfence.com",
"description": [
{
"lang": "en",
"value": "CWE-639"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "The Booking Package plugin for WordPress is vulnerable to Privilege Escalation via Account Takeover in versions up to, and including, 1.7.16. This is due to a missing capability check on the 'updateUser' branch of the package_app_action AJAX endpoint, where the handler only validates a nonce and the dispatcher invokes Schedule::updateUser() with the $administrator argument hard-coded to 1, bypassing the only owner-restriction check inside that function and allowing the target user to be determined solely by attacker-supplied input passed directly to wp_update_user(). This makes it possible for authenticated attackers, with Editor-level access and above, to change the email address and password of any account, including Administrator accounts, resulting in a full site takeover."
},
{
"lang": "es",
"value": "El plugin Booking Package para WordPress es vulnerable a escalada de privilegios a través de toma de control de cuenta en versiones hasta la 1.7.16, inclusive. Esto se debe a una comprobación de capacidad faltante en la rama 'updateUser' del endpoint AJAX package_app_action, donde el gestor solo valida un nonce y el despachador invoca Schedule::updateUser() con el argumento $administrator codificado a 1, omitiendo la única comprobación de restricción de propietario dentro de esa función y permitiendo que el usuario objetivo sea determinado únicamente por la entrada proporcionada por el atacante pasada directamente a wp_update_user(). Esto hace posible que atacantes autenticados, con acceso de nivel Editor y superior, cambien la dirección de correo electrónico y la contraseña de cualquier cuenta, incluidas las cuentas de Administrador, lo que resulta en una toma de control completa del sitio."
}
],
"lastModified": "2026-07-23T07:10:00.113",
"sourceIdentifier": "security@wordfence.com"
}