Simple User Registration <= 6.7 - Authenticated (Subscriber+) Privilege Escalation via profile_save_field
Affected versions: *-6.7
Vulnerability type: CWE-284 Improper Access Control
Affected software, patched versions and attribution
The Simple User Registration plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 6.7 due to insufficient restriction on the 'profile_save_field' function. This makes it possible for authenticated attackers, with minimal permissions such as a subscriber, to modify their user role by supplying the 'wp_capabilities' parameter during a profile update.
MemberHero – Simple User Registration & Login
Affected versions: *-6.7
Patched versions: 6.8
Researcher credit: johska
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- Published
- January 27, 2026
- CVSS
- 8.8