PT-2026-31608 · WordPress · Bookly

Youssef Elouaer · Published 2026-04-09 · Updated 2026-04-09 · CVE-2026-2519

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Bookly versions up to and including 27.0

Description The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is susceptible to price manipulation through the tips parameter. The plugin does not properly validate user-supplied input against the configured price, allowing unauthenticated attackers to submit a negative number to the tips parameter. This can reduce the total price to zero.

Recommendations Update Bookly to a version newer than 27.0.

Fix

Weakness Enumeration

CWE-472

Related Identifiers

CVE-2026-2519

Affected Products

Bookly

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2026-2519 · Security Note
• https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/lib/UserBookingData.php#L355 · Note
• https://booking-wp-plugin.com/change-log · Note
• https://twitter.com/cyberbivash/status/2042229362418704772 · Twitter Post
• https://twitter.com/infoflowcloud/status/2042304262374306073 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/ead87d8b-2659-4e8b-a0b9-138b1db89e36?source=cve · Note
• https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/frontend/modules/booking/Ajax.php#L709 · Note
• https://plugins.trac.wordpress.org/changeset/3480956 · Note
• https://twitter.com/CVEnew/status/2042302836625838105 · Twitter Post
• https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/lib/CartInfo.php#L450 · Note