Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction <= 3.1.3 - Unauthenticated Reflected Cross-Site Scripting via Profile Builder PayPal Redirect
- ID
- WPSEC-2026-2333
- Plugin
- Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction (paid-member-subscriptions)
- Affected
- all versions before 3.1.4
- Remediation
- Update to 3.1.4 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-11-03
- Attack surface
- Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction on WPSec AttackSurface
- Fix released
- Published
Description
The Paid Membership Subscriptions plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the Profile Builder PayPal redirect message in all versions up to, and including, 3.1.3, due to insufficient output escaping of the redirect URL placed in a meta refresh tag. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link, on sites where the Profile Builder plugin is active, registration pays through PayPal Standard, and Profile Builder's automatic login after registration is enabled with a non-zero redirect delay.
References
- https://wpsec.com/vuln/WPSEC-2026-2333/
- https://plugins.svn.wordpress.org/paid-member-subscriptions/tags/3.1.4/
- https://wordpress.org/plugins/paid-member-subscriptions/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
This advisory as JSON or Markdown · All advisories: JSON, RSS