Ninja Forms Contact Form <= 3.4.33 - Authenticated SendWP Plugin Installation and Client Secret Key Disclosure

8.8
Exposure of Sensitive Information to an Unauthorized Actor
CVE CVE-2021-24163
CVSS 8.8 (High)
Publicly Published February 16, 2021
Last Updated January 22, 2024
Researcher Chloe Chamberland - Wordfence

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.

References

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Vulnerability Details for Ninja Forms – The Contact Form Builder That Grows With You

Software Type Plugin
Software Slug ninja-forms (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.4.34, or a newer patched version
Affected Version
  • < 3.4.34
Patched Version
  • 3.4.34

Recent vulnerabilities in Ninja Forms – The Contact Form Builder That Grows With You

# Title CVE ID CVSS Researchers Date
1 Ninja Forms <= 3.14.1 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via token/refresh REST Endpoint CVE-2026-1239 7.5 suyoung kim(AhnLab) June 30, 2026
2 Ninja Forms <= 3.14.1 - Authenticated (Contributor+) Sensitive Information Disclosure via Block Editor Token CVE-2026-1307 6.5 Lucas Montes (NiRoX) March 27, 2026
3 Ninja Forms <= 3.14.0 - Unauthenticated Information Disclosure in nf_ajax_submit AJAX Action CVE-2026-2268 7.5 johska February 9, 2026
4 Ninja Forms – The Contact Form Builder That Grows With You <= 3.13.2 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Exposure via Unscoped Bearer Token CVE-2025-11924 7.5 Lucas Montes (NiRoX), Marcin Dudek (dudekmar) December 16, 2025
5 Ninja Forms <= 3.13.2 - Missing Authorization to Unauthenticated Submission Disclosure CVE-2025-14072 7.5 Marco Lunardi December 12, 2025
6 Ninja Forms – The Contact Form Builder That Grows With You <= 3.12.0 - Cross-Site Request Forgery to Plugin Settings Update CVE-2025-10499 4.3 Nguyen Ngoc Quang Bach (maysbachs) September 26, 2025
7 Ninja Forms – The Contact Form Builder That Grows With You <= 3.12.0 - Cross-Site Request Forgery to Limited File Deletion CVE-2025-10498 4.3 Nguyen Ngoc Quang Bach (maysbachs) September 26, 2025
8 Ninja Forms <= 3.11.0 - Unauthenticated PHP Object Injection CVE-2025-9083 8.1 wesley (wcraft) August 28, 2025
9 Ninja Forms <= 3.10.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via CSTI CVE-2025-5398 6.4 Asaf Mozes June 26, 2025
10 Ninja Forms – The Contact Form Builder That Grows With You <= 3.10.0 - Authenticated (Admin+) Stored Cross-Site Scripting CVE-2025-2524 4.4 Dmitrii Ignatyev April 28, 2025

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