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CVE-2026-9851

7.2 · HIGH

The Booking Package plugin for WordPress is vulnerable to Privilege Escalation via Account Takeover in versions up to, and including, 1.7.16.

Published Jun 6, 2026CWE-639EPSS 0.61%

Overview

CVE-2026-9851 is a high-severity vulnerability. It was published on June 6, 2026 and has a CVSS 3.1 base score of 7.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/index.php#L4416Refplugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/index.php#L4477Refplugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/lib/Schedule.php#L868Refplugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3558752%40booking-package&new=3558752%40booking-package&sfp_email=&sfph_mail=Refwww.wordfence.com/threat-intel/vulnerabilities/id/795c1fd6-137b-4414-8d6b-30053bfb5924?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-9851?

CVE-2026-9851 is a high-severity vulnerability. It was published on June 6, 2026 and has a CVSS 3.1 base score of 7.2 (HIGH).

How severe is CVE-2026-9851?

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-9851?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-9851?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-9851 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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