---
id: "CVE-2026-109870"
page: "https://infrastack.ai/live/CVE-2026-109870"
kind: "vulnerability"
aliases: ["CVE-2026-109870"]
title: "WordPress User Registration plugin: coupons let anyone get paid roles free"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["membership-sites", "package", "user-registration-plugin", "wordpress"]
not_affected_if: ["no-paid-membership-plans", "no-privileged-role-mapped", "plugin-version-5.3.2-or-later"]
published_at: "2026-11-11T06:17:10+00:00"
first_seen_at: "2026-11-11T06:25:39+00:00"
updated_at: "2026-11-11T06:28:02+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109870", "first_seen_at": "2026-11-11T06:25:39+00:00"}]
exploit_sources: []
---

# WordPress User Registration plugin: coupons let anyone get paid roles free

Link for people: https://infrastack.ai/live/CVE-2026-109870 (this .md is for agents)

The User Registration & Membership WordPress plugin does not check that a discount coupon applies to the paid plan being bought. A fully discounted order is then treated as paid, so an unauthenticated visitor can be given the role tied to that plan without paying, which can reach administrator when a plan maps to an admin role.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed plugin version in WordPress admin under Plugins, or in the plugin header of `user-registration/user-registration.php`.
- Review membership plans in the plugin settings for any plan mapped to a privileged role such as administrator or editor.
- Check whether discount coupons are in use and whether registration or membership signup is open to the public.

## Fix

- User Registration & Membership plugin: `5.3.2` or later (per the description, versions before 5.3.2 are affected).

## Timeline

- 2026-11-11T06:25:39+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-109870

## From the sources

The User Registration & Membership  WordPress plugin before 5.3.2 does not verify that a discount coupon applied to a paid membership plan is actually valid for that plan before treating a fully discounted order as paid, allowing unauthenticated users to be granted the role mapped to a paid plan without paying for it, which can lead to privilege escalation up to administrator where a plan is mapped to a privileged role.

---

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