Unauthorized Actions in eaSYNC Booking Plugin for WordPress
CVE-2026-103304

Currently unrated

Key Information:

Vendor

WordPress
Status
Easync Booking
Vendor
CVE Published:
15 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-103304?

The eaSYNC Booking plugin for WordPress, prior to version 1.3.31, has significant security flaws due to missing authorization and nonce checks on various cancellation-related AJAX actions. This lack of security measures allows unauthenticated users to initiate cancellation requests for bookings, send booking notification emails, and manipulate the content of these emails, potentially leading to significant disruption and misuse for site administrators.

Affected Version(s)

eaSYNC Booking 0 < 1.3.31

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-2026-103304 - Proof of Concept

References

https://wpscan.com/vulnerability/99069eac-aa52-41da-9d63-...
exploitvdb-entrytechnical-description

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Enrico Marcolini
Claudio Marchesini
Dottor Marc
WPScan
.