CVE-2026-1503

MEDIUM 4.3

login_register <= 1.2.0 - Cross-Site Request Forgery to Stored Cross-Site Scripting

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-352
Vendor	frankkoenen
Product	plugin name: login_register
Published	Mar 21, 2026
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

frankkoenen / Plugin Name: login_register

0 ≤ 1.2.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/8c82d209-3c69-4d6e-a129-d519f6601540?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/login-register/tags/1.2.0/login_register_admin.php#L12 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/login-register/tags/1.2.0/login_register_admin.php#L14 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/login-register/tags/1.2.0/login_register_admin.php#L69

Credits

Muhammad Nur Ibnu Hubab