---
id: "CVE-2026-109873"
page: "https://infrastack.ai/live/CVE-2026-109873"
kind: "vulnerability"
aliases: ["CVE-2026-109873"]
title: "WordPress User Registration & Membership plugin: unpaid users can log in"
severity: "medium"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["membership-sites", "package", "user-registration-membership", "wordpress"]
not_affected_if: ["no-payment-gated-forms", "plugin-version-5.3.2-or-later"]
published_at: "2026-11-11T06:17:11+00:00"
first_seen_at: "2026-11-11T06:25:40+00:00"
updated_at: "2026-11-11T06:27:59+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109873", "first_seen_at": "2026-11-11T06:25:40+00:00"}]
exploit_sources: []
---

# WordPress User Registration & Membership plugin: unpaid users can log in

Link for people: https://infrastack.ai/live/CVE-2026-109873 (this .md is for agents)

The User Registration & Membership WordPress plugin before 5.3.2 skips its payment check when a registration is submitted without choosing a membership. An unauthenticated visitor can create an account on a payment-gated form and log in without paying.

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

## How to check

- Look for the User Registration & Membership plugin in the WordPress admin plugin list and check its version.
- Confirm whether any registration forms require payment before login.

## Fix

- User Registration & Membership plugin: `5.3.2` or later

## Timeline

- 2026-11-11T06:25:40+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-109873

## From the sources

The User Registration & Membership  WordPress plugin before 5.3.2 does not enforce its payment-before-login restriction when a registration is submitted without a membership selection, allowing unauthenticated users to create an account on a payment-gated registration form and log in without completing payment.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_