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.

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

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. 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

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