ladela Bookly Plugin up to 27.2 on WordPress Capability Check main.php updateAddon improper authorization

Summaryinfo

A vulnerability labeled as problematic has been found in ladela Bookly Plugin up to 27.2. The impacted element is the function updateAddon of the file main.php of the component Capability Check. The manipulation results in improper authorization. This vulnerability is known as CVE-2026-2520. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in ladela Bookly Plugin up to 27.2. Affected is the function updateAddon of the file main.php of the component Capability Check. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on integrity, and availability. CVE summarizes:

The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'updateAddon' function in all versions up to, and including, 27.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update any plugin with a main file of 'main.php' to its latest version.

The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-2520 since 02/15/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/08/2026). The MITRE ATT&CK project declares the attack technique as T1548.002.

By approaching the search of inurl:main.php it is possible to find vulnerable targets with Google Hacking.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• ladela

Name

• Bookly Plugin

Version

• 27.0
• 27.1
• 27.2

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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