CVE-2024-56022
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into web pages generated by the WordPress Monsters Preloader plugin, which are then executed in victims' browsers. It affects all WordPress sites using Preloader by WordPress Monsters plugin versions up to 1.2.3. Attackers can steal session cookies, redirect users, or perform actions on their behalf.
💻 Affected Systems
- Preloader by WordPress Monsters
⚠️ 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 steal administrator session cookies, gain full control of WordPress site, install backdoors, deface website, or steal sensitive user data.
Likely Case
Attackers steal user session cookies, redirect visitors to malicious sites, or perform limited actions within user context.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching users' browsers.
🎯 Exploit Status
Requires attacker to craft malicious URL and trick user into clicking it. No authentication bypass needed for reflected XSS.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.2.3
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Preloader by WordPress Monsters'. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete plugin immediately.
🔧 Temporary Workarounds
Disable vulnerable plugin
WordPressTemporarily disable the Preloader by WordPress Monsters plugin until patched version is available.
wp plugin deactivate preloader-sws
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Enable Content Security Policy (CSP) headers to restrict script execution
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for 'Preloader by WordPress Monsters' version 1.2.3 or earlier.Check Version:
wp plugin list --name=preloader-sws --field=versionVerify Fix Applied:
Verify plugin version is higher than 1.2.3 in WordPress admin panel or run: wp plugin list --name=preloader-sws --field=version📡 Detection & Monitoring
Log Indicators:
- Unusual GET/POST requests with script tags or JavaScript payloads in query parameters
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests containing <script>, javascript:, or encoded XSS payloads in URL parameters
SIEM Query:
source="web_server_logs" AND ("<script>" OR "javascript:" OR "%3Cscript%3E") AND uri_path="/wp-content/plugins/preloader-sws/"