A significant security flaw has been identified in the popular Ninja Forms plugin for WordPress, allowing for Cross-Site Request Forgery (CSRF) attacks. This vulnerability, tracked as CVE-2025-10499, could enable attackers to trick administrators into performing unintended actions on their websites, potentially compromising data or site integrity.
Understanding the Vulnerability
Cross-Site Request Forgery, or CSRF, is a type of attack where a malicious website, email, blog post, instant message, or program causes a user’s web browser to perform an unwanted action on a trusted site for which the user is currently authenticated. In the case of Ninja Forms, the plugin was missing or incorrectly validating a security token called a “nonce” within its maybe_opt_in() function. This function is responsible for handling a site’s decision to opt into or out of usage statistics collection.
The absence of proper nonce validation meant that an unauthenticated attacker could craft a special request. If a logged-in site administrator were to click on a malicious link, for example, their browser could be tricked into executing this forged request on their behalf. This could force the WordPress site to opt into usage statistics collection without the administrator’s direct consent or knowledge, and similar issues could arise with file download functions.
CVE Details
- Product: Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress
- Published: September 27, 2025
- Severity: Medium
- Status: Analyzed
Affected Products
This vulnerability impacts all versions of the Ninja Forms plugin for WordPress up to, and including, version 3.12.0. If you are running any version within this range, your website is susceptible to this CSRF attack.
Current Status
The vulnerability has been officially analyzed and confirmed. A patch has been released to address the issue, and users are strongly advised to update their installations immediately.
Severity Level
The vulnerability has been assigned a Medium severity rating with a CVSS score of 4.3. While not critical, a successful CSRF attack can still pose a notable risk. It relies on social engineering (tricking an administrator to click a link), but if successful, it can lead to unauthorized changes in plugin settings or potentially other administrative actions, which could have a ripple effect on your site’s security posture.
Possible Solutions
The good news is that a fix is available! To protect your WordPress site from this Cross-Site Request Forgery vulnerability, you must update your Ninja Forms plugin to a secure version.
The issue was resolved in **version 3.12.1** of the Ninja Forms plugin, which was released on September 22, 2025. Please ensure your plugin is updated to version 3.12.1 or any subsequent version.
To update your plugin:
- Log in to your WordPress dashboard.
- Navigate to ‘Plugins’ > ‘Installed Plugins’.
- Locate ‘Ninja Forms’ and click on the ‘Update Now’ link if available.
- If no update notification appears, you may need to manually check for updates or download the latest version from the WordPress plugin repository and install it.
Regularly updating your plugins is a fundamental cybersecurity practice that helps maintain the overall security and stability of your WordPress website.
References
https://plugins.trac.wordpress.org/browser/ninja-forms/trunk/lib/NF_Tracking.php
https://plugins.trac.wordpress.org/changeset/3365881/ninja-forms/trunk?contextall=1&old=3362375&old_path=%2Fninja-forms%2Ftrunk#file6
https://www.wordfence.com/threat-intel/vulnerabilities/id/a2f118fc-d99a-4713-865e-2da7a9e20db5?source=cve
