CVE-2026-2519CWE-472

Online Scheduling and Appointment Booking System – Bookly <= 27.0 - Unauthenticated Price Manipulation via 'tips'

Medium · published April 9, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
38.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00452 · 38.2th percentile
Weakness
CWE-472 · External Control of Assumed-Immutable Web Parameter
Published
2026-04-09T12:28Z
EPSS history
Timeline
  • 09 APR 12:28Z
    Online Scheduling and Appointment Booking System – Bookly <= 27.0 - Unauthenticated Price Manipulation via 'tips'
    cvelistv5