CVE-2025-64264
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Aman Popup addon for Ninja Forms allows attackers to inject malicious scripts into web pages generated by the plugin. When users view pages containing the injected scripts, the attacker can steal session cookies, redirect users, or perform actions on their behalf. This affects all WordPress sites using vulnerable versions of the Popup addon for Ninja Forms plugin.
💻 Affected Systems
- Popup addon for Ninja Forms (WordPress plugin)
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, gain administrative access to WordPress sites, install backdoors, deface websites, or compromise user data.
Likely Case
Attackers inject malicious scripts to steal user session cookies, redirect users to phishing sites, or perform limited actions within the user's current session.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users, preventing exploitation.
🎯 Exploit Status
Stored XSS vulnerabilities typically require some level of access to input fields, but once injected, the payload affects all users viewing the compromised page.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 3.5.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Popup addon for Ninja Forms'. 4. Click 'Update Now' if available. 5. If no update appears, manually download latest version from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the Popup addon for Ninja Forms plugin until patched
wp plugin deactivate popup-addon-for-ninja-forms
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to nginx config: add_header Content-Security-Policy "default-src 'self'; script-src 'self'";
🧯 If You Can't Patch
- Remove the Popup addon for Ninja Forms plugin completely
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'Popup addon for Ninja Forms' versionCheck Version:
wp plugin get popup-addon-for-ninja-forms --field=versionVerify Fix Applied:
Verify plugin version is greater than 3.5.1 in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints
- Suspicious script tags in form submissions
- Multiple failed XSS attempts in web server logs
Network Indicators:
- Malicious script payloads in HTTP requests
- Unexpected redirects to external domains
- Suspicious cookie theft attempts
SIEM Query:
source="web_server" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=") AND uri="*/popup-addon*"