# Events Manager – Calendar, Bookings, Tickets, Appointments and more! <= 7.4.10 - Authenticated (Contributor+) Insecure Direct Object Reference to Booking Takeover

- **ID:** WPSEC-2026-1659
- **Plugin:** Events Manager – Calendar, Bookings, Tickets, Appointments and more! (`events-manager`), https://wordpress.org/plugins/events-manager/
- **Affected versions:** all versions before 7.4.11
- **Fixed in:** 7.4.11 (Update to 7.4.11 or later.)
- **Severity:** Medium 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N)
- **Weakness:** CWE-639
- **Usage among sites WPSec scans:** plugin Medium, affected versions Medium (as of 2026-10-26)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/events-manager
- **Fix released:** 2026-10-25
- **Published:** 2026-10-26
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1659/

## Description

The Events Manager plugin for WordPress is vulnerable to Insecure Direct Object Reference via the booking_add action in all versions up to, and including, 7.4.10. This is due to the handler loading an existing booking from the user-supplied booking_id and then letting EM_Booking::get_post() reassign it to the event_id in the request, while the only authorization check, in EM_Booking::save(), is made against that new event. This makes it possible for authenticated attackers with contributor-level access and above who own a published event to move another user's booking onto their own event and then view the booker's personal details.

## References

- https://wpsec.com/vuln/WPSEC-2026-1659/
- https://plugins.svn.wordpress.org/events-manager/tags/7.4.11/
- https://wordpress.org/plugins/events-manager/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1659/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.