Vulnerability · Published Mar 21, 2026 · Assigned by Wordfence
CVE-2026-1503login_register <= 1.2.0 - Cross-Site Request Forgery to Stored Cross-Site Scripting
Medium 4.3
In plain English
A medium-severity cross-site request forgery in Plugin Name: login_register from frankkoenen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).
Official description
The login_register plugin for WordPress is vulnerable to Cross-Site Request Forgery to Stored Cross-Site Scripting in all versions up to, and including, 1.2.0. This is due to missing nonce validation on the settings page and insufficient input sanitization and output escaping on the 'login_register_login_post' parameter. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page via a forged request granted they can trick an administrator into performing an action such as clicking on a link.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| frankkoenen | Plugin Name: login_register | 0 – through 1.2.0 |
Weakness: CWE-352 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/8c82d209-3c69-4d6e-a129-d519f6601540?source=cve
- https://plugins.trac.wordpress.org/browser/login-register/tags/1.2.0/login_register_admin.php#L12
- https://plugins.trac.wordpress.org/browser/login-register/tags/1.2.0/login_register_admin.php#L14
- https://plugins.trac.wordpress.org/browser/login-register/tags/1.2.0/login_register_admin.php#L69