CVE-2026-5513 — Online Scheduling and Appointment Booking System – Bookly [bookly-responsive-appointment-booking-tool] < 27.3

CVE	Vulnerability	Type	Severity	Affected	Fixed in	Published	Status
CVE-2026-5513	Online Scheduling and Appointment Booking System – Bookly [bookly-responsive-appointment-booking-tool] < 27.3	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	High 7.2	< 27.3	27.3	2026-06-12	—

CVE-2026-5513

The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'bookly-customer-full-name' cookie in versions up to, and including, 27.2 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. Exploitation requires 'Remember personal information in cookies' setting to be enabled (disabled by default).

Source: CVE.org

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