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CVE-2021-24163

HIGH 8.8 CVSS 3.1
Published
April 5, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
contact@wpscan.com
Weakness
CWE-200, CWE-862
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

The AJAX action, wp_ajax_ninja_forms_sendwp_remote_install_handler, did not have a capability check on it, nor did it have any nonce protection, therefore making it possible for low-level users, such as subscribers, to install and activate the SendWP Ninja Forms Contact Form – The Drag and Drop Form Builder for WordPress WordPress plugin before 3.4.34 and retrieve the client_secret key needed to establish the SendWP connection while also installing the SendWP plugin.

Affected WordPress components

  • Ninja Forms – The Contact Form Builder That Grows With You Plugin · ninja-forms
    Confirmed match Active
    From 3.4.34 (including) to 3.4.34 (excluding)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown Ninja Forms Contact Form – The Drag and Drop Form Builder for WordPress — From 3.4.34 (including) to 3.4.34 (excluding)
  • ninjaforms ninja_forms — Before 3.4.34

References

  • wpscan.com https://wpscan.com/vulnerability/55fde9fa-f6cd-4546-bee8-4acc628251c2 Exploit, Third Party Advisory
  • www.wordfence.com https://www.wordfence.com/blog/2021/02/one-million-sites-affected-four-severe-vulnerabilities-patched-in-ninja-forms/ Third Party Advisory
  • nvd.nist.gov Official NVD record