Paid Member Subscriptions <= 3.0.7 - Missing Authorization to Authenticated (Subscriber+) Cross-User Subscription Hijack
The Paid Member Subscriptions plugin for WordPress is vulnerable to unauthorized access in versions up to, and including, 3.0.7. This is due to missing ownership validation on the pms_current_subscription POST parameter in the process_checkout function, allowing any authenticated user to reference subscriptions belonging to other users. This makes it possible for authenticated attackers, with subscriber-level access and above, to hijack another user's subscription by supplying an arbitrary subscription ID during checkout, modifying or taking over subscriptions belonging to other members.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction | <= 3.0.7 | 3.0.8 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-862- Platform
- WordPress
- Package
Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction- Disclosed
- 27.07.2026
- Updated
- 11.10.2026 10:23
Sources and licenses
Wordfence Intelligence - d8a0f5a3-fed8-4dac-b07a-46139a940665 - Wordfence Intelligence
Copyright 1999-2026 The MITRE Corporation
Copyright 2012-2026 Defiant Inc.
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Wordfence Intelligence - Defiant, Inc. Copyright Defiant, Inc. All rights reserved except as granted below. License grant, section 3.1 of the Wordfence Intelligence Terms and Conditions (January 26, 2026): Subject to this Agreement, Company hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute the Service. Any copy you make for such purposes is authorized provided that you reproduce Company’s copyright designation, this license, and the license of any disclosed Company licensor in any such copy. Full applicable Agreement: https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/
Vulnerability history: Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 26
- First → latest
- 08.2021 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 4
- Medium 21
Disclosures per year
- 2021: 2
- 2022: 0
- 2023: 1
- 2024: 5
- 2025: 6
- 2026: 12
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Paid Member Subscriptions <= 3.0.7 - Missing Authorization to Authenticated (Subscriber+) Cross-User Subscription Hijack this entry
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