CVE-2025-39358
📋 TL;DR
This vulnerability allows attackers to inject malicious objects through deserialization of untrusted data in the WP Posts Carousel WordPress plugin. Successful exploitation could lead to remote code execution or data manipulation. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Teastudio.Pl WP Posts Carousel 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
Remote code execution leading to complete site compromise, data theft, or server takeover.
Likely Case
Arbitrary file upload leading to backdoor installation, data exfiltration, or site defacement.
If Mitigated
Limited impact if proper input validation and output encoding are implemented elsewhere.
🎯 Exploit Status
PHP object injection vulnerabilities are frequently weaponized and often lead to RCE chains.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.3.13 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find WP Posts Carousel. 4. Click 'Update Now' if available. 5. If no update appears, manually download version 1.3.13+ from WordPress.org and replace plugin files.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate wp-posts-carousel
Restrict Plugin Access
allUse web application firewall to block requests to plugin endpoints.
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all user-supplied data
- Deploy web application firewall with PHP object injection protection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → WP Posts Carousel version number.Check Version:
wp plugin get wp-posts-carousel --field=versionVerify Fix Applied:
Verify plugin version is 1.3.13 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-posts-carousel endpoints
- PHP unserialize() errors in logs
- Unexpected file uploads or modifications
Network Indicators:
- HTTP requests containing serialized PHP objects
- Traffic to known exploit paths for this plugin
SIEM Query:
source="*apache*" OR source="*nginx*" AND (uri_path="*wp-posts-carousel*" AND (method="POST" OR method="PUT"))