CVE-2026-16282

Appointment Hour Booking < 1.5.88 - Unauthenticated Booking Price Manipulation via tcost Parameter

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.

Affected

Appointment Hour Booking

CVSS v3.1 CNA

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.30% chance of exploitation in the next 30 days, 22nd percentile

Published

2026-08-08

Updated

2026-08-11

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/e87116af-d202-434b-9f47-e61e9c886240/

References

• CVE Record
• NVD entry