CVE-2026-109368 Missing authorization in WP Booking System – Booking Calendar
Authenticated subscribers can extract private booking descriptions and IDs from any calendar due to missing authorization checks in the WP Booking System plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109368?
CVE-2026-109368 is a medium-severity missing authorization vulnerability in murgroland WP Booking System – Booking Calendar, published on 17 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The WP Booking System – Booking Calendar plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.1.0.3 via the 'id' parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to extract private per-event booking descriptions and booking IDs from any calendar managed by the site.
Weakness: CWE-862
Which versions are affected by CVE-2026-109368?
How do I fix CVE-2026-109368?
No fix has been published for CVE-2026-109368 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-109368 being exploited?
There is no known exploitation of CVE-2026-109368 in the wild and no public exploit code.
Sources
Also known as GHSA-4x57-h4wj-759x.