Quick answers
- Is CVE-2026-75524 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-75524 being exploited in the wild.
- How severe is CVE-2026-75524?
- Medium severity, with a CVSS score of 5.4, published 23 October 2026.
- Which products and versions are affected?
- OpenReception Appointment-Booking-Software prior to 2.2.2.
- Is there a fix for CVE-2026-75524?
- Yes: fixed in 2.2.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-75524 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-75524?
- Check whether you run OpenReception Appointment-Booking-Software at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 2.2.2
Technical details
A race condition exists in the event creation logic prior to version 2.2.2, where the booking token is consumed after the database insert rather than before, allowing multiple concurrent requests with the same token to create overlapping appointments. The vulnerability requires network access to the booking API and can be exploited by sending concurrent requests to the same time slot. An attacker gains the ability to disrupt service availability by creating conflicting bookings.
Affected products
- OpenReception appointment booking software prior to 2.2.2
Timeline
- 2026-10-23: disclosed
- 2026-07-08: patched