CVE-2025-10498: 
WordPress vulnerability analysis and mitigation

CVE-2025-10498 is a Cross-Site Request Forgery (CSRF) vulnerability in the Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress. It affects all versions up to and including 3.12.0, and stems from missing or incorrect nonce validation during CSV file export operations. The vulnerability was published on September 27, 2025, and assigned by Wordfence. It carries a CVSS v3.1 base score of 5.4 (Medium) (Wordfence, Red Hat CVE).

The root cause is classified as CWE-352 (Cross-Site Request Forgery), specifically due to missing or incorrect nonce validation in the CSV export/delete functionality within includes/Admin/Menus/Submissions.php (around line 464). An unauthenticated attacker can craft a malicious link or page that, when visited by a logged-in WordPress administrator, triggers an unauthorized request to delete exported CSV files without the administrator's knowledge or consent. Exploitation requires social engineering to induce administrator interaction (e.g., clicking a crafted link), making it a user-interaction-dependent attack vector (Wordfence, WordPress Trac).

Successful exploitation allows an unauthenticated attacker to cause the deletion of CSV export files (form submission data) on the affected WordPress site, resulting in low integrity and low availability impact with no confidentiality exposure. While the direct impact is limited to file deletion rather than data theft or remote code execution, loss of form submission exports could disrupt business operations or destroy records. The attack scope is unchanged, meaning it does not enable lateral movement beyond the affected plugin's data (Wordfence, Red Hat CVE).

There is no known public proof-of-concept exploit code and no evidence of active in-the-wild exploitation at this time (Wordfence). The EPSS score is approximately 0.012% (0.000120), indicating a very low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. No threat actor attribution has been reported.

1. Reconnaissance: Identify WordPress sites running Ninja Forms plugin version 3.12.0 or earlier using tools like WPScan or by inspecting publicly visible plugin metadata.
2. Craft malicious request: Construct a forged HTTP request targeting the Ninja Forms CSV delete endpoint (handled in Submissions.php), which lacks proper nonce validation.
3. Social engineering: Embed the malicious request in a link, image tag, or hidden form on an attacker-controlled webpage, then trick a logged-in WordPress administrator into visiting that page (e.g., via phishing email or forum post).
4. CSRF execution: When the administrator's browser loads the attacker's page, it automatically sends the forged request to the WordPress site using the administrator's authenticated session cookies, triggering the deletion of CSV export files without the administrator's consent (Wordfence, WordPress Trac).

• Logs: WordPress access logs showing unexpected POST or GET requests to Ninja Forms submission/CSV export endpoints from unusual referrers or external domains, particularly requests that result in file deletions.
• File System: Unexplained disappearance of CSV export files from the Ninja Forms submissions export directory on the WordPress server.
• Logs: WordPress admin action logs (if audit logging is enabled) recording CSV deletion actions at unusual times or without corresponding administrator activity.

The vendor has released a patch in Ninja Forms version 3.12.1, which implements proper nonce validation for the CSV export/delete functionality. All users running version 3.12.0 or earlier should update immediately via the WordPress plugin dashboard or by downloading the patched version from the WordPress plugin repository. As interim measures, administrators should be trained to avoid clicking unexpected links, and a Web Application Firewall (WAF) can be configured to detect and block anomalous CSRF-like requests targeting WordPress admin endpoints (Wordfence, WordPress Trac Changeset).