Skip to content
OpenAdvisories
Medium · 5.3 CVE-2026-16282 EUVD-2026-54731GHSA-r9q4-xcm5-g5ww

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

Published Aug 8, 2026 · Updated Aug 11, 2026 · Assigned by WPScan

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.

Affected products

VendorProductAffectedFixed
— Appointment Hour Booking < 1.5.88 1.5.88

References