Improper Access Control in Simply Schedule Appointments Plugin for WordPress
CVE-2026-16541

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Simply Schedule Appointments
Vendor
CVE Published:
15 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16541?

The Simply Schedule Appointments WordPress plugin prior to version 1.6.12.17 suffers from improper access control. This flaw allows users with low privilege, such as those in staff roles, to access user records from REST endpoints without adequate restrictions. Consequently, this vulnerability enables these users to disclose sensitive information, including names and email addresses of arbitrary registered users, potentially leading to data exposure.

Affected Version(s)

Simply Schedule Appointments 0 < 1.6.12.17

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-2026-16541 - Proof of Concept

References

https://wpscan.com/vulnerability/8172f778-5dc5-49e8-9967-...
exploitvdb-entrytechnical-description

CVSS V3.1

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

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Yaswanth Reddy Sunkara
WPScan
.