CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2021-24163
High (8.8) in ninjaforms ninja forms. EPSS 1.4% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 1.4% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-862, CWE-200
- Published
- Modified
- Record from
- the NVD, synced
Affected
- ninjaforms:ninja_forms
References
- https://wpscan.com/vulnerability/55fde9fa-f6cd-4546-bee8-4acc628251c2
- https://www.wordfence.com/blog/2021/02/one-million-sites-affected-four-severe-vulnerabilities-patched-in-ninja-forms/
- https://wpscan.com/vulnerability/55fde9fa-f6cd-4546-bee8-4acc628251c2
- https://www.wordfence.com/blog/2021/02/one-million-sites-affected-four-severe-vulnerabilities-patched-in-ninja-forms/