Unauthorized Appointment Modification in Easy Appointments Plugin by WordPress
CVE-2026-87966
Currently unrated
Key Information:
- Vendor
WordPress
- Status
- Vendor
- CVE Published:
- 18 September 2026
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2026-87966?
The Easy Appointments plugin for WordPress prior to version 4.0.2.2 is susceptible to an authorization bypass vulnerability. This issue arises from the lack of proper ownership checks on its unauthenticated appointment-reservation endpoint. Attackers can exploit this vulnerability to modify existing appointments identified by user-supplied IDs, enabling them to overwrite appointment details and potentially delete arbitrary appointments without any authentication.
Affected Version(s)
Easy Appointments 4.0 < 4.0.2.2
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.