CVE-2026-2519 Online Scheduling and Appointment Booking System – Bookly <= 27.0 - Unauthenticated Price Manipulation via 'tips'
Unauthenticated attackers can manipulate booking prices to zero by submitting negative tips, requiring plugin updates to enforce server-side validation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2519?
CVE-2026-2519 is a medium-severity vulnerability in ladela Online Scheduling and Appointment Booking System – Bookly, published on 9 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to price manipulation via the 'tips' parameter in all versions up to, and including, 27.0. This is due to the plugin trusting a user-supplied input without server-side validation against the configured price. This makes it possible for unauthenticated attackers to submit a negative number to the 'tips' parameter, causing the total price to be reduced to zero.
Weakness: CWE-472
Which versions are affected by CVE-2026-2519?
How do I fix CVE-2026-2519?
No fix has been published for CVE-2026-2519 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-2519 being exploited?
There is no known exploitation of CVE-2026-2519 in the wild and no public exploit code.
Sources
Also known as GHSA-ghp2-h9w4-7r66.