Authorization Flaw in Booking for Appointments and Events Calendar Plugin by WordPress
CVE-2026-77704

2.7LOW

Key Information:

Vendor

WordPress
Status
Booking For Appointments And Events Calendar
Vendor
CVE Published:
29 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-77704?

The Booking for Appointments and Events Calendar plugin for WordPress prior to version 2.4.9 features an authorization vulnerability that allows users to change appointment statuses without proper capability checks. This flaw enables customers to set arbitrary statuses on their bookings, including approving their own appointments left in pending status and modifying another customer's booking status on shared appointments. Such exploitation can lead to unauthorized access and manipulation of booking processes within this plugin.

Affected Version(s)

Booking for Appointments and Events Calendar 1.2.32 < 2.4.9

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-2026-77704 - Proof of Concept

References

https://wpscan.com/vulnerability/7b444920-28c4-4e4c-b5fd-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
2.7
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Louise
WPScan
.