Insecure Direct Object Reference in Paid Membership Plugin for WordPress
CVE-2026-10820

8.1HIGH

Key Information:

Vendor

WordPress
Status
Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content
Vendor
CVE Published:
27 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-10820?

The Paid Membership Plugin for WordPress prior to version 4.16.17 is affected by an Insecure Direct Object Reference vulnerability. This flaw allows any authenticated user with Subscriber role or higher to cancel active subscriptions of other users without verifying ownership of the subscription. This vulnerability could lead to unauthorized cancellation of subscriptions, posing a risk to user accounts and their associated benefits.

Affected Version(s)

Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content 0 < 4.16.17

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-2026-10820 - Proof of Concept

References

https://wpscan.com/vulnerability/cb7ad514-e0d5-4ff3-803a-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
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

Haitam Lazaar
WPScan
.