CVE-2026-13424
HighCVSS 7.2Exploitation Probability (EPSS)
Low risk26th percentile - higher than 26% of all known CVEs
Summary
The Bookly plugin for WordPress up to version 27.7 is vulnerable to Stored Cross-Site Scripting via the bookly_speed_up_update_addons AJAX action. Unauthenticated attackers can inject arbitrary scripts that execute when an administrator views the Diagnostics → Logs page.
Risk Assessment
An attacker could hijack an administrator session, steal data, or infect the site with malicious code, potentially leading to full site compromise.
Recommendation
Update the Bookly plugin to the latest version if a patch is available. Restrict access to the logs page and regularly check logs for suspicious entries.
Original NVD description (English source)
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.