Simplr Registration Form Plus+ <= 2.4.5 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary User Password Change

Authorization Bypass Through User-Controlled Key
CVE CVE-2023-4213
CVSS 8.8 (High)
Publicly Published September 12, 2023
Last Updated September 13, 2023
Researcher István Márton - Wordfence


The Simplr Registration Form Plus+ plugin for WordPress is vulnerable to Insecure Direct Object References in versions up to, and including, 2.4.5. This is due to the plugin providing user-controlled access to objects, letting a user bypass authorization and access system resources. This makes it possible for authenticated attackers with subscriber-level permissions or above to change user passwords and potentially take over administrator accounts.



Vulnerability Details for Simplr Registration Form Plus+

Software Type Plugin
Software Slug simplr-registration-form (view on
Patched? No
Remediation No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
Affected Version
  • <= 2.4.5

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