Booking Management Flaw in Appointment Hour Booking Plugin by WordPress
CVE-2026-86475

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Appointment Hour Booking
Vendor
CVE Published:
16 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-86475?

The Appointment Hour Booking WordPress plugin versions before 1.5.95 contains a vulnerability that fails to validate the booking capacity for appointments. As a result, unauthenticated users can exploit this flaw to reserve appointment slots that are already at full capacity, potentially leading to overbooked schedules and operational disruptions for service providers.

Affected Version(s)

Appointment Hour Booking 0 < 1.5.95

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-86475 - Proof of Concept

References

https://wpscan.com/vulnerability/b7b45dae-bc91-4142-ae9b-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Nicat
WPScan
.