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.
History

Sat, 06 Jun 2026 06:45:00 +0000

Type Values Removed Values Added
First Time appeared Masaakitanaka
Masaakitanaka booking Package
Wordpress
Wordpress wordpress
Vendors & Products Masaakitanaka
Masaakitanaka booking Package
Wordpress
Wordpress wordpress

Sat, 06 Jun 2026 05:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Booking Package <= 1.7.16 - Authenticated (Editor+) Privilege Escalation via Account Takeover to updateUser AJAX Action
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-06-06T04:28:19.979Z

Reserved: 2026-05-28T14:49:39.596Z

Link: CVE-2026-9851

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-06T05:16:30.047

Modified: 2026-06-06T05:16:30.047

Link: CVE-2026-9851

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-06T07:00:14Z