Improper Authorization in TrueBooker Plugin for WordPress
CVE-2026-18778

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Truebooker
Vendor
CVE Published:
19 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18778?

The TrueBooker WordPress plugin prior to version 1.2.7 lacks essential authorization checks in specific AJAX actions. This vulnerability permits unauthorized users to access sensitive customer information, including names, email addresses, phone numbers, and postal addresses, associated with appointments. Consequently, this oversight poses significant privacy risks to users booking through the platform.

Affected Version(s)

TrueBooker 0 < 1.2.7

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-2026-18778 - Proof of Concept

References

https://wpscan.com/vulnerability/0a9b6706-ff3a-4a41-b85c-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
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

Luka Zimonjic
WPScan
.