CVE-2026-16282 Appointment Hour Booking < 1.5.88 - Unauthenticated Booking Price Manipulation via tcost Parameter
Unauthenticated attackers can manipulate booking prices via the tcost parameter, corrupting payment records in the Appointment Hour Booking plugin.
- 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-2026-16282?
CVE-2026-16282 is a medium-severity vulnerability in Unknown Appointment Hour Booking, published on 8 Aug 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 1.5.88 does not validate a client-supplied booking price against the server-side configured service price, allowing unauthenticated users to submit an arbitrary final price (including zero or negative) that is stored as the authoritative booking price, corrupting booking and payment records.
Weakness: CWE-287
Which versions are affected by CVE-2026-16282?
How do I fix CVE-2026-16282?
No fix has been published for CVE-2026-16282 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-16282 being exploited?
There is no known exploitation of CVE-2026-16282 in the wild and no public exploit code.
Sources
Also known as GHSA-r9q4-xcm5-g5ww.