CVE-2025-63059
📋 TL;DR
This stored XSS vulnerability in the Ninja Popups WordPress plugin allows attackers to inject malicious scripts into web pages, which execute when other users view those pages. All WordPress sites using vulnerable versions of the arscode Ninja Popups plugin are affected.
💻 Affected Systems
- arscode Ninja Popups 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 admin session cookies, perform actions as authenticated users, deface websites, or redirect users to malicious sites.
Likely Case
Attackers inject malicious scripts to steal user session cookies or credentials, potentially compromising user accounts.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before execution.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited; exploitation requires attacker to have ability to inject content.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 4.7.8
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins > Installed Plugins
3. Find 'Ninja Popups' and click 'Update Now'
4. Verify plugin version is >4.7.8
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the Ninja Popups plugin until patched
wp plugin deactivate arscode-ninja-popups
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'"
Or add to WordPress functions.php
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Restrict plugin access to trusted users only
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Ninja Popups versionCheck Version:
wp plugin get arscode-ninja-popups --field=versionVerify Fix Applied:
Verify plugin version is >4.7.8 in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints
- Suspicious script tags in form submissions
Network Indicators:
- Malicious script payloads in HTTP requests
- Unexpected outbound connections after page loads
SIEM Query:
source="wordpress" AND (uri_path="/wp-admin/admin-ajax.php" OR uri_path CONTAINS "ninja-popups") AND (http_method="POST" AND (request_body CONTAINS "<script>" OR request_body CONTAINS "javascript:"))