---
id: "CVE-2026-25450"
kind: "vulnerability"
aliases: ["CVE-2026-25450"]
title: "User Registration WordPress plugin: missing authorization check exposes access control"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "themegrill", "user-registration", "wordpress"]
not_affected_if: ["plugin-newer-than-5.3.0"]
published_at: "2026-10-29T15:17:22+00:00"
first_seen_at: "2026-10-29T15:25:39+00:00"
updated_at: "2026-10-29T15:26:55+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25450", "first_seen_at": "2026-10-29T15:25:39+00:00"}]
---

# User Registration WordPress plugin: missing authorization check exposes access control

The ThemeGrill User Registration WordPress plugin has a missing authorization check, so access control settings can be exploited when misconfigured. The sources do not say exactly which data or actions an attacker gets.

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

## How to check

- Check the installed version of the User Registration plugin in the WordPress admin under Plugins, and compare it with the affected range.
- Review the plugin's access control and role settings for restricted content or registration options.

## Fix

- Move the User Registration plugin to a version later than `5.3.0`.

## Timeline

- 2026-10-29T15:25:39+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-25450

## From the sources

Missing Authorization vulnerability in ThemeGrill User Registration user-registration allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects User Registration: from n/a through 5.3.0.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_