ladela Bookly Plugin up to 28.4 on WordPress id/wp_user_id resource injection

Summaryinfo

A vulnerability was found in ladela Bookly Plugin up to 28.4 and classified as critical. Affected by this vulnerability is an unknown functionality. Such manipulation of the argument id/wp_user_id leads to resource injection. This vulnerability is uniquely identified as CVE-2026-104898. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in ladela Bookly Plugin up to 28.4. It has been rated as critical. Affected by this issue is an unknown code. The manipulation of the argument id/wp_user_id with an unknown input leads to a resource injection vulnerability. Using CWE to declare the problem leads to CWE-99. The product receives input from an upstream component, but it does not restrict or incorrectly restricts the input before it is used as an identifier for a resource that may be outside the intended sphere of control. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 28.4 via the 'id, wp_user_id' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the WordPress account binding of any Bookly staff record, including those owned by administrators, effectively hijacking a higher-privileged staff member's account association and escalating privileges. Exploitation requires the attacking user to be linked to at least one Bookly staff record, which occurs by default whenever an admin enables the bookly_gen_allow_staff_edit_profile option (active on fresh installs) and links a WordPress user to a staff entry.

The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-104898 since 10/02/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/10/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• ladela

Name

• Bookly Plugin

Version

• 28.0
• 28.1
• 28.2
• 28.3
• 28.4

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Timelineinfo

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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