Booking Calendar <= 10.14.14 - Insecure Direct Object Reference to Authenticated (Subscriber+) Arbitrary User Settings Modification

Authorization Bypass Through User-Controlled Key
CVE CVE-2026-2230
CVSS Medium (4.3)
Publicly Published February 17, 2026
Last Updated February 18, 2026
Researcher Tarcísio Luchesi De Almeida Silva (Poystick)
Description

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.

References

1 affected software package

Software Type Plugin
Software Slug booking (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 10.14.14
Patched Version
  • 10.14.15
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