123ContactForm for WordPress <= 1.5.6 - Validation Bypass via Plugin Verification

Authentication Bypass Using an Alternate Path or Channel
CVSS 9.8 (Critical)
Publicly Published January 19, 2021
Last Updated December 5, 2022
Researcher Rodrigo Escobar (ipax)


The 123ContactForm plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the cfp_connect() function in versions up to, and including, 1.5.6. This makes it possible for unauthenticated attackers to trigger validation and inject their own public SSL key.



Vulnerability Details for 123ContactForm for WordPress

Software Type Plugin
Software Slug 123contactform-for-wordpress (view on wordpress.org)
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
  • <= 1.5.6

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