CVE-2026-13424highCWE-79

CVE-2026-13424: high-severity vulnerability in ladela Online Scheduling and Appointment…

Online Scheduling and Appointment Booking System <= 27.7 - Unauthenticated Stored Cross-Site Scripting via bookly_speed_up_update_addons AJAX action

Published · Updated

Follow this CVE+ Monitor Online Scheduling and Appointment Booking System – Bookly

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.2epss 0.6%
The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via bookly_speed_up_update_addons AJAX action in all versions up to, and including, 27.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The injection point is the bookly_speed_up_update_addons AJAX action, which is registered as wp_ajax_nopriv_* and therefore reachable without authentication; the payload is stored verbatim in the bookly_log.details column when a request is submitted without a valid signature, and executes when an administrator later views the Diagnostics → Logs page.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Affected products
ladela · Online Scheduling and Appointment Booking System – Bookly
Related CVEs — ladela Online Scheduling and Appointment…

In the same product, most dangerous first.

CVE-2026-89063HIGHOnline Scheduling and Appointment Booking System <= 28.1 - Insecure Direct Object Reference to Unauthenticated Sensitive Data Access and Message Injection via 'conversation_id' ParameterEPSS 1.6%CVE-2026-93399CRITICALOnline Scheduling and Appointment Booking System <= 28.2 - Insecure Direct Object Reference to Unauthenticated Arbitrary Booking Token Disclosure and Deletion via 'order_id' ParameterEPSS 0.6%CVE-2026-14516HIGHOnline Scheduling and Appointment Booking System <= 27.5 - Unauthenticated SQL InjectionEPSS 0.5%CVE-2026-2519MEDIUMOnline Scheduling and Appointment Booking System – Bookly <= 27.0 - Unauthenticated Price Manipulation via 'tips'EPSS 0.5%CVE-2026-5513HIGHOnline Scheduling and Appointment Booking System – Bookly <= 27.2 - Unauthenticated Stored Cross-Site Scripting via 'bookly-customer-full-name' CookieEPSS 0.4%CVE-2026-12905MEDIUMOnline Scheduling and Appointment Booking System – Bookly <= 27.7 - Authenticated (Staff+) Insecure Direct Object Reference to Sensitive Information Exposure via 'params[id]' ParameterEPSS 0.4%