CVE-2025-48086
📋 TL;DR
This vulnerability allows attackers to inject malicious objects through deserialization of untrusted data in the Ajax Search Lite WordPress plugin. It affects all WordPress sites running Ajax Search Lite version 4.13.3 or earlier. Successful exploitation could lead to remote code execution.
💻 Affected Systems
- WordPress Ajax Search Lite 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
Remote code execution leading to complete system compromise, data theft, and website defacement.
Likely Case
Arbitrary code execution allowing attackers to install backdoors, steal sensitive data, or pivot to other systems.
If Mitigated
Limited impact if proper input validation and output encoding are implemented elsewhere in the application stack.
🎯 Exploit Status
Deserialization vulnerabilities are frequently weaponized and require minimal technical skill to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.13.4 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Ajax Search Lite. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate ajax-search-lite
Restrict Access
linuxBlock access to plugin files via web server configuration.
# In Apache .htaccess: <Files "ajax-search-lite/*"> Order Allow,Deny Deny from all </Files>
# In Nginx: location ~ /wp-content/plugins/ajax-search-lite/ { deny all; }
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block deserialization attacks.
- Monitor for unusual plugin activity and implement strict file integrity monitoring.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel under Plugins > Installed Plugins for Ajax Search Lite version.Check Version:
wp plugin get ajax-search-lite --field=versionVerify Fix Applied:
Verify plugin version is 4.13.4 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to ajax-search-lite endpoints
- PHP errors related to unserialize() or object injection
Network Indicators:
- HTTP requests containing serialized PHP objects in parameters
- Traffic spikes to search functionality
SIEM Query:
source="web_logs" AND (uri="*ajax-search-lite*" OR user_agent="*serialize*" OR params="*O:*")