The Booking Calendar plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 10.14.14 via the handle_ajax_save function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, and booking permissions granted by an Administrator, to modify other users' plugin settings, such as booking calendar display options, which can disrupt the booking calendar functionality for the targeted user.
CVE-2026-2230 is a medium severity with CVSS 4.3 Authorization Bypass issue affecting the Plugin Booking Calendar. It affects Versions up to 10.14.14 and is fixed in 10.14.15.
CVE-2026-2230 is tracked for the Plugin Booking Calendar as medium severity with CVSS 4.3. The affected range is Versions up to 10.14.14. Update Booking Calendar to 10.14.15 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
booking
View on wordpress.org
|
| CVE | CVE-2026-2230 |
| Patched Versions |
10.14.15
|
| Affected Versions |
Versions up to 10.14.14
|
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 <= 9.9 - Unauthenticated SQL Injection
Booking Calendar <= 8.4.3 - SQL injection
Booking Calendar <= 9.1 - PHP Object Injection via Shortcode
Booking Calendar <= 10.14.8 - Unauthenticated SQL Injection via dates_to_check
Booking Calendar <= 9.4.2 - Authenticated (Admin+) SQL Injection
Booking Calendar <= 9.7.3 - Unauthenticated Stored Cross-Site Scripting
Booking Calendar <= 10.14.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via bookingcalendar Shortcode
Booking Calendar <= 10.14.7 - Authenticated (Contributor+) Stored Cross-Site Scripting
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