Medium severity5.3NVD Advisory· Published Apr 9, 2026· Updated Apr 24, 2026
CVE-2026-2519
CVE-2026-2519
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
6- plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/frontend/modules/booking/Ajax.phpnvd
- plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/lib/CartInfo.phpnvd
- plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/lib/UserBookingData.phpnvd
- plugins.trac.wordpress.org/changeset/3480956/nvd
- www.booking-wp-plugin.com/change-log/nvd
- www.wordfence.com/threat-intel/vulnerabilities/id/ead87d8b-2659-4e8b-a0b9-138b1db89e36nvd
News mentions
1- Wordfence Intelligence Weekly WordPress Vulnerability Report (April 6, 2026 to April 12, 2026)Wordfence Blog · Apr 16, 2026