Subscription Bypass Vulnerability in User Frontend WordPress Plugin
CVE-2026-17563

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
User Frontend
Vendor
CVE Published:
2 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-17563?

The User Frontend plugin for WordPress, prior to version 4.3.11, contains a flaw that fails to enforce subscription requirements during post submissions. As a result, unauthenticated users can exploit this weakness to create and potentially publish posts without proper authorization, enabling them to misuse functionalities intended solely for paying subscribers.

Affected Version(s)

User Frontend 0 < 4.3.11

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-2026-17563 - Proof of Concept

References

https://wpscan.com/vulnerability/293b7391-ac1a-4ec5-95d1-...
exploitvdb-entrytechnical-description

CVSS V3.1

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

Charles Vosburgh
WPScan
.