Sensitive Information Exposure in WP Booking System Plugin by WordPress
CVE-2026-109368

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
WP Booking System – Booking Calendar
Vendor
CVE Published:
17 October 2026

What is CVE-2026-109368?

The WP Booking System – Booking Calendar plugin for WordPress has a significant security flaw that allows authenticated users with subscriber-level access or higher to exploit the 'id' parameter. This vulnerability permits unauthorized extraction of sensitive data, including private booking descriptions and IDs from managed calendars on affected sites. All versions of the plugin prior to 2.1.0.3 are susceptible, heightening risks for site administrators who have not updated to the latest version.

Affected Version(s)

WP Booking System – Booking Calendar 0 <= 2.1.0.3

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/wp-booking-sys...
https://plugins.trac.wordpress.org/browser/wp-booking-sys...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Wordfence PRISM
.