Super Forms – Drag & Drop Form Builder <= 6.3.316 - Authenticated (Subscriber+) Privilege Escalation via 'user_id' Parameter in Register & Login
| CVE | CVE-2026-15897 |
|---|---|
| CVSS | 8.8 (High) |
| Publicly Published | October 1, 2026 |
| Last Updated | October 2, 2026 |
| Researcher |
d.v4n_s3c
|
Description
The Super Forms – Drag & Drop Form Builder plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 6.3.316. This is due to the Register & Login add-on's before_email_success_msg() function, in its register_login_action='update' flow, trusting an attacker-supplied user_id value and passing it to wp_update_user() without any ownership or capability check. Because the super_save_form AJAX action also enforces no capability check, any authenticated user with Subscriber-level access and above can create the required malicious form (register_login_action='update' with register_login_user_id_update='true') and then submit it with user_id set to an administrator's ID along with a new user_pass/user_email. This makes it possible for authenticated attackers with Subscriber-level access and above to overwrite the credentials of arbitrary existing accounts — including administrators — resulting in account takeover and full site compromise.
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Vulnerability Details for Super Forms – Drag & Drop Form Builder
| Software Type | Plugin |
|---|---|
| Software Slug | super-forms |
| Patched? | Yes |
| Remediation | Update to version 6.3.317, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Super Forms – Drag & Drop Form Builder
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