Unauthenticated Broken Access Control in Appointment Hour Booking Plugin by WordPress
CVE-2026-66679

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Appointment Hour Booking
Vendor
CVE Published:
18 August 2026

What is CVE-2026-66679?

The Appointment Hour Booking plugin for WordPress versions up to 1.5.91 is susceptible to an unauthenticated broken access control vulnerability. Unauthorized users may exploit this flaw to gain access to restricted functionalities, potentially leading to unauthorized actions within the application. This could allow malicious actors to manipulate or extract sensitive information without proper authentication measures in place.

Affected Version(s)

Appointment Hour Booking <= 1.5.91

References

https://patchstack.com/database/wordpress/plugin/appointm...
vdb-entry

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Tiago Ventura (@perses) | Patchstack Bug Bounty Program
.