CVE-2026-9851

Booking Package <= 1.7.16 - Authenticated (Editor+) Privilege Escalation via Account Takeover to updateUser AJAX Action

Published Jun 6, 2026 CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Jun 6, 2026, 11:41 AM
Reserved
May 28, 2026, 2:49 PM
Status
Deferred
Published
Jun 6, 2026, 5:16 AM
Modified
Jul 23, 2026, 7:10 AM