Vulnerability Description
The User Registration & Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `embed_form_action()` function in all versions up to, and including, 5.1.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to append shortcode content to arbitrary pages they do not own or have permission to edit.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/user-registration/tags/5.1.2/includes
- https://plugins.trac.wordpress.org/browser/user-registration/tags/5.1.2/includes
- https://plugins.trac.wordpress.org/browser/user-registration/trunk/includes/admi
- https://plugins.trac.wordpress.org/browser/user-registration/trunk/includes/clas
- https://plugins.trac.wordpress.org/changeset/3485702/user-registration/trunk/inc
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c8798fb2-4cab-4960-9e3
FAQ
What is CVE-2026-3601?
CVE-2026-3601 is a vulnerability with a CVSS score of 4.3 (MEDIUM). The User Registration & Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `embed_form_action()` function in all versions up to...
How severe is CVE-2026-3601?
CVE-2026-3601 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-3601?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.