CVE-2026-2520 Missing authorization in Online Scheduling and Appointment Booking System – Bookly
Authenticated subscribers can arbitrarily update plugins due to missing capability checks in the Bookly WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2520?
CVE-2026-2520 is a medium-severity missing authorization vulnerability in ladela Online Scheduling and Appointment Booking System – Bookly, published on 8 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-2520?
How do I fix CVE-2026-2520?
No fix has been published for CVE-2026-2520 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-2520 being exploited?
There is no known exploitation of CVE-2026-2520 in the wild and no public exploit code.
Sources
Also known as GHSA-pqcg-gw2f-rqp8.