CVE-2024-11582
📋 TL;DR
The Subscribe2 WordPress plugin has a stored XSS vulnerability in all versions up to 10.43. Unauthenticated attackers can inject malicious scripts via the ip parameter, which execute when users view affected pages. This affects all WordPress sites using vulnerable versions of the plugin.
💻 Affected Systems
- Subscribe2 – Form, Email Subscribers & Newsletters 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 credentials, deface websites, redirect users to malicious sites, or install backdoors for persistent access.
Likely Case
Attackers inject malicious scripts to steal user session cookies, redirect visitors to phishing pages, or display unwanted content.
If Mitigated
With proper web application firewalls and input validation, the risk is reduced to minimal impact with potential for script execution blocked.
🎯 Exploit Status
The vulnerability requires no authentication and involves simple script injection via the ip parameter.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 10.44 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3158285%40subscribe2%2Ftrunk&old=3158284%40subscribe2%2Ftrunk
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Subscribe2 plugin. 4. Click 'Update Now' if available. 5. Alternatively, download version 10.44+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
WordPressDisable the Subscribe2 plugin until patched to prevent exploitation.
wp plugin deactivate subscribe2
Web Application Firewall Rules
allConfigure WAF to block requests containing script tags or JavaScript in ip parameter.
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to prevent script execution
- Use a web application firewall to filter malicious input to the ip parameter
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for Subscribe2 version 10.43 or earlier.Check Version:
wp plugin get subscribe2 --field=versionVerify Fix Applied:
Verify plugin version is 10.44 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WordPress with script tags in ip parameter
- Multiple failed injection attempts in web server logs
Network Indicators:
- HTTP requests containing <script> tags in parameters
- Unusual traffic patterns to subscribe2 endpoints
SIEM Query:
source="web_logs" AND (uri_path="*subscribe2*" AND (param="*<script>*" OR param="*javascript:*"))