Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Unknown Appointment Hour Booking — Appointment Hour Booking < 1.5.88 - Unauthenticated Booking Price Manipulation via tcost Parameter
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U N L N 5.3 .0018 8.1 —
AFFECTED
Product Versions Fixed
Appointment Hour Booking unspecified —
TIMELINE
Jul 20 Reserved by WPScan
Aug 8 Published (CNA: WPScan)
Aug 10 EXPLOIT PUBLISHED — CVE-2026-16282 (Unknown Appointment Hour Booking). Public exploit reference added.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| July 20, 2026 | Reserved | Reserved by WPScan |
| August 8, 2026 | Published | Published (CNA: WPScan) |
| August 10, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-16282 (Unknown Appointment Hour Booking). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Unknown | Appointment Hour Booking | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-16282 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.