The Booking calendar, Appointment Booking System plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 3.2.36 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.
CVE-2026-25435 is a high severity with CVSS 7.2 Stored Cross-Site Scripting issue affecting the Plugin Booking calendar, Appointment Booking System. It affects Versions up to 3.2.36 and is listed without a confirmed patched release.
CVE-2026-25435 is tracked for the Plugin Booking calendar, Appointment Booking System as high severity with CVSS 7.2. The affected range is Versions up to 3.2.36. No fixed release is listed in this feed entry, so operators should monitor the vendor and reference links before accepting the risk.
| Software Type | Plugin |
|---|---|
| Software Slug |
booking-calendar
View on wordpress.org
|
| CVE | CVE-2026-25435 |
| Patched Versions |
No patched versions published.
|
| Affected Versions |
Versions up to 3.2.36
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Booking calendar, Appointment Booking System <= 3.2.1 - Unauthenticated Arbitrary File Upload
Booking calendar, Appointment Booking System <= 2.1.7 - Cross-Site Request Forgery
Booking calendar, Appointment Booking System < 2.2.3 - Unauthenticated Parameter Manipulation
Booking calendar, Appointment Booking System <= 3.2.15 - Unauthenticated Stored Cross-Site Scripting via SVG File Upload
Booking calendar, Appointment Booking System <= 3.2.6 - Authenticated (Administrator+) SQL Injection via *_selected
Booking Calendar WpDevArt <= 3.2.19 - Authenticated (Contributor+) SQL Injection
Booking Calendar and Booking Calendar Pro <= Multiple Versions - Reflected Cross-Site Scripting via 'calendar_id'
Booking calendar, Appointment Booking System <= 3.2.3 - Authenticated (Editor+) Stored Cross-Site Scripting
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