# CVE-2026-9851: Booking Package WordPress plugin privilege escalation in package_app_action

Source: https://junglewise.ai/threats/cve-2026-9851-booking-package-wordpress-plugin-privilege-escalation-in-package  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-06. Updated: 2026-06-06  
License: CC BY 4.0 with a link back

CVE-2026-9851 · Severity: high · CVSS 7.2 · Published 2026-06-06

The Booking Package plugin for WordPress, which provides appointment and reservation management, contains a security flaw that allows certain users to take over other accounts. An attacker with Editor-level access can change the email address and password of any user, including site administrators. This can lead to a complete takeover of the website and its data.

Technologies: [Booking Package](https://junglewise.ai/threats/technologies/booking-package). Vendors: [Booking Package](https://junglewise.ai/threats/vendors/booking-package).

## Quick answers

**Is CVE-2026-9851 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9851 being exploited in the wild.

**How severe is CVE-2026-9851?** High severity, with a CVSS score of 7.2, published 6 June 2026.

**Which products and versions are affected?** Booking Package up to, and including, 1.7.16.

**Is there a fix for CVE-2026-9851?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-9851 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-9851?** Check whether you run Booking Package at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

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. While the handler validates a nonce, the dispatcher invokes Schedule::updateUser() with a hard-coded administrator argument set to 1, which bypasses internal owner-restriction checks. This allows an authenticated attacker with Editor-level permissions or higher to provide arbitrary user IDs to the wp_update_user() function, enabling them to change passwords and email addresses for any account, including Administrators.

## Affected products

- Booking Package Booking Package up to, and including, 1.7.16

## Timeline

- 2026-06-06: disclosed
- 2026-06-06: advisory

## References

- [https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/index.php](https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/index.php)
- [https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/index.php](https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/index.php)
- [https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/lib/Schedule.php](https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/lib/Schedule.php)
- [https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3558752%40booking-package&new=3558752%40booking-package&sfp_email=&sfph_mail=](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](https://www.wordfence.com/threat-intel/vulnerabilities/id/795c1fd6-137b-4414-8d6b-30053bfb5924?source=cve)

## Related threats

- [Booking Package WordPress plugin payment bypass](https://junglewise.ai/threats/cve-2026-106000-the-booking-package-wordpress-plugin-before-1-7-34-does-not)
- [Booking Package WordPress plugin unauthenticated email sending](https://junglewise.ai/threats/cve-2026-105997-the-booking-package-wordpress-plugin-before-1-7-33-does-not)
- [Booking Package WordPress plugin missing authorization check](https://junglewise.ai/threats/cve-2026-105998-the-booking-package-wordpress-plugin-before-1-7-31-does-not)
- [Booking Package WordPress plugin stored cross-site scripting](https://junglewise.ai/threats/cve-2026-103425-the-booking-package-plugin-for-wordpress-is-vulnerable-to-stored)
- [Booking Package plugin for WordPress authorization bypass](https://junglewise.ai/threats/cve-2026-103423-the-booking-package-plugin-for-wordpress-is-vulnerable-to)