CVE-2026-86475 Appointment Hour Booking < 1.5.95 - Unauthenticated Booking Capacity Bypass via Multi-Appointment Submission
Unauthenticated attackers can bypass booking capacity limits by submitting multiple appointments, allowing them to take fully booked slots.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86475?
CVE-2026-86475 is a medium-severity vulnerability in Unknown Appointment Hour Booking, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Appointment Hour Booking WordPress plugin before 1.5.95 does not check every appointment in a booking submission against the capacity configured for its own slot, allowing unauthenticated visitors to take slots that are already fully booked.
Weakness: CWE-20
Which versions are affected by CVE-2026-86475?
How do I fix CVE-2026-86475?
No fix has been published for CVE-2026-86475 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-86475 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86475 exists.
Sources
Also known as GHSA-cqfw-wgfw-rqrw.