plugin
14 known security issues reported for the Appointment Hour Booking WordPress plugin. Most recent disclosed Aug 18, 2026.
Running Appointment Hour Booking on your site? Check whether your installed version is affected.
Scan your site freeThe Appointment Hour Booking – Booking Calendar plugin for WordPress is vulnerable to unauthorized access in all versions up to, and including, 1.5.91. This is due to a missing capability check on a function. This makes it possible for unauthenticated attackers to perform an unauthorized action.
The Appointment Hour Booking plugin for WordPress is vulnerable to Price Manipulation in versions up to, and including, 1.5.87. This is due to the extract_appointments function accepting a user-supplied price via the tcost parameter (stored as $fieldpostedcost) and assigning it directly to the booking record, exploitab...
The Appointment Hour Booking – Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.5.86 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject ar...
The Appointment Hour Booking – Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via form field configuration parameters in all versions up to, and including, 1.5.60 due to insufficient input sanitization and output escaping on the 'Min length/characters' and 'Max length/characters' fie...
The Appointment Hour Booking plugin for WordPress is vulnerable to CAPTCHA Bypass in versions up to, and including, 1.4.56. This makes it possible for unauthenticated attackers to bypass the Captcha Verification.
The Appointment Hour Booking plugin for WordPress is vulnerable to unauthorized double booking due to insufficient validation on the data_management() function in versions up to, and including, 1.4.23. This makes it possible for unauthenticated attackers to make double bookings.
The Appointment Hour Booking plugin for WordPress is vulnerable to iFrame Injection via the ‘email’ or general field parameters in versions up to, and including, 1.3.72 due to insufficient input sanitization and output escaping that makes injecting iFrame tags possible. This makes it possible for unauthenticated attack...
The Appointment Hour Booking Plugin for WordPress is vulnerable to CSV Injection in versions up to, and including, 1.3.72. This makes it possible for unauthenticated attackers to embed untrusted input into content during booking creation that may be exported as a CSV file when a site's administrator exports booking det...
The Appointment Hour Booking plugin for WordPress is vulnerable to CAPTCHA bypass in versions up to, and including, 1.3.72. This is due to the use of insufficiently strong hashing algorithm on the CAPTCHA secret that is also displayed to the user via a cookie.
The Appointment Hour Booking plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the cpapphb_feedback function in versions up to, and including, 1.3.71. This makes it possible for authenticated attackers, with subscriber-level permissions and above, to provide plugin feedback...
The Appointment Hour Booking WordPress plugin before 1.3.56 does not sanitise and escape a settings of its Calendar fields, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed.
The Appointment Hour Booking WordPress plugin before 1.3.17 does not properly sanitize values used when creating new calendars.
The Appointment Hour Booking WordPress plugin before 1.3.16 does not escape some of the Calendar Form settings, allowing high privilege users to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.
The Appointment Hour Booking plugin 1.1.44 for WordPress allows XSS via the E-mail field, as demonstrated by email_1.
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