What the vulnerability does
01Description
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).
Explanation of Vulnerability in Simple Terms
02Summary
Bookly versions 27.2 and earlier contain a cross-site scripting (XSS) vulnerability that allows unauthenticated attackers to inject malicious scripts into the application. The vulnerability affects the scope beyond the vulnerable component itself. An attacker can craft a malicious request to inject JavaScript that executes in users' browsers, potentially stealing session data or performing actions on their behalf.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in users' browsers and steals data or performs actions on their behalf.
Potential impact on your site
04Site Impact
Site visitors may have their sessions compromised or be tricked into performing unwanted actions without their knowledge.
Conditions required to exploit
05Prerequisites
No authentication or user interaction required; attacker can exploit this remotely by crafting a malicious request.
Key dates
06Disclosure timeline
June 13, 2026
CVE published
June 15, 2026
Record updated
