CVE-2025-10498 Overview
CVE-2025-10498 is a Cross-Site Request Forgery (CSRF) vulnerability in the Ninja Forms WordPress plugin, affecting all versions up to and including 3.12.0. The flaw stems from missing or incorrect nonce validation in the CSV export functionality located in Submissions.php. Unauthenticated attackers can delete exported CSV files by tricking an administrator into clicking a malicious link. The vulnerability is tracked under CWE-352: Cross-Site Request Forgery and requires user interaction to succeed.
Critical Impact
Attackers can delete exported CSV submission files on affected WordPress sites by luring authenticated administrators into visiting attacker-controlled pages.
Affected Products
- Ninja Forms – The Contact Form Builder That Grows With You (WordPress plugin)
- Versions up to and including 3.12.0
- WordPress sites running the vulnerable plugin with administrative CSV export functionality enabled
Discovery Timeline
- 2025-09-27 - CVE-2025-10498 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-10498
Vulnerability Analysis
The vulnerability resides in the submissions administration menu of the Ninja Forms plugin. The CSV export handler in includes/Admin/Menus/Submissions.php fails to validate a WordPress nonce token before performing file deletion operations. WordPress uses nonces as anti-CSRF tokens to confirm that a state-changing request originated from a legitimate user session. Because this validation is missing or incorrectly implemented, the endpoint accepts requests initiated cross-origin.
The impact is limited to integrity and availability of exported CSV artifacts. No confidentiality impact exists because the attacker cannot read the file contents. Successful exploitation requires an authenticated administrator to interact with an attacker-supplied link or resource while a valid session is active.
Root Cause
The root cause is the absence of a check_admin_referer() or wp_verify_nonce() call on the CSV deletion action path. Without this validation, the browser's automatic transmission of session cookies allows any origin to trigger the destructive action on behalf of a logged-in administrator.
Attack Vector
An attacker crafts an HTML page containing a request targeting the vulnerable CSV export deletion endpoint. The attacker then delivers this page to an administrator through phishing, a comment link, or an embedded resource on a compromised site. When the administrator loads the page in a browser session where they are logged in to the target WordPress site, the request executes with administrative privileges and deletes the target CSV file.
The vulnerability mechanism is described in the Wordfence Vulnerability Report and the fix is visible in the WordPress Ninja Forms Changeset.
Detection Methods for CVE-2025-10498
Indicators of Compromise
- Unexpected deletion of exported CSV submission files from the Ninja Forms submissions directory.
- Web server access logs showing requests to the submissions admin endpoint with Referer headers pointing to unrelated third-party domains.
- Administrator browser history entries showing visits to unknown external pages shortly before missing CSV files are reported.
Detection Strategies
- Correlate WordPress admin file-deletion events with the presence or absence of nonce parameters in the corresponding HTTP request.
- Monitor for anomalous cross-origin POST or GET requests targeting wp-admin pages that carry authenticated session cookies but originate from external referers.
- Track plugin version inventory across managed WordPress sites and flag any Ninja Forms installation at 3.12.0 or earlier.
Monitoring Recommendations
- Enable WordPress audit logging to record administrative actions including submission exports and deletions.
- Alert on administrator sessions performing unusual file operations outside normal working hours or in rapid succession.
- Review web application firewall (WAF) logs for requests to Ninja Forms admin URLs lacking a valid _wpnonce parameter.
How to Mitigate CVE-2025-10498
Immediate Actions Required
- Update the Ninja Forms plugin to the version released after 3.12.0 that includes the nonce validation fix.
- Audit the WordPress plugin inventory to identify all sites running affected versions.
- Instruct administrators to log out of WordPress when not actively managing the site to reduce the CSRF exposure window.
Patch Information
The vendor addressed the vulnerability by adding proper nonce validation to the CSV export handler. The code change is documented in the WordPress Ninja Forms Changeset 3365881. The vulnerable code path in Submissions.php is referenced in the WordPress Ninja Forms source browser.
Workarounds
- Restrict access to the WordPress admin interface using IP allow-listing at the web server or WAF layer.
- Deploy a web application firewall rule that blocks requests to Ninja Forms admin endpoints missing a valid _wpnonce parameter.
- Use browser isolation or separate browser profiles for WordPress administration to prevent session reuse across untrusted browsing.
- Regularly back up Ninja Forms CSV exports to an external location so that deleted files can be restored.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
