CVE-2025-25105
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Pop Up WordPress plugin allows attackers to inject malicious scripts into web pages. When users view pages containing the malicious content, the scripts execute in their browsers, potentially stealing session cookies or performing actions on their behalf. All WordPress sites using vulnerable versions of the Pop Up plugin are affected.
💻 Affected Systems
- WordPress Pop Up plugin (Popup SEO Optimized)
⚠️ 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, take over WordPress sites, deface websites, or redirect visitors to malicious sites.
Likely Case
Attackers inject malicious JavaScript 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 reaching users' browsers.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited once discovered. Attackers need to inject malicious scripts into the site's content.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 0.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Pop Up' plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete the plugin.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the Pop Up plugin until patched version is available
wp plugin deactivate popup-seo-optimized
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 wp-config.php: header("Content-Security-Policy: default-src 'self'; script-src 'self'");
🧯 If You Can't Patch
- Remove the Pop Up plugin completely and use alternative popup solutions
- Implement web application firewall rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for 'Pop Up' version 0.1 or earlierCheck Version:
wp plugin list --name=popup-seo-optimized --field=versionVerify Fix Applied:
Verify plugin version is higher than 0.1 or plugin is removed from installed plugins list📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints
- Suspicious JavaScript in database entries
- Multiple failed XSS attempts in web server logs
Network Indicators:
- Malicious script tags in HTTP requests
- Suspicious characters in URL parameters (<, >, ", ')
SIEM Query:
source="web_server" AND ("popup" OR "pop-up") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")