CVE-2025-26921
📋 TL;DR
This vulnerability allows attackers to inject malicious objects through deserialization of untrusted data in the Booking and Rental Manager WordPress plugin. Successful exploitation could lead to remote code execution or data manipulation. All WordPress sites using affected versions of this plugin are vulnerable.
💻 Affected Systems
- Booking and Rental Manager for WooCommerce 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, data manipulation, or privilege escalation within the WordPress environment.
If Mitigated
Limited impact if proper input validation and security controls prevent exploitation attempts.
🎯 Exploit Status
Exploitation requires understanding of PHP object injection techniques and plugin architecture.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 2.2.6
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Booking and Rental Manager for WooCommerce'. 4. Click 'Update Now' if available. 5. If no update appears, manually download latest version from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable Plugin
WordPressTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate booking-and-rental-manager-for-woocommerce
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block deserialization attacks
- Restrict plugin access to authenticated users only
🔍 How to Verify
Check if Vulnerable:
Check plugin version in WordPress admin under Plugins > Installed PluginsCheck Version:
wp plugin get booking-and-rental-manager-for-woocommerce --field=versionVerify Fix Applied:
Verify plugin version is greater than 2.2.6 after update📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints
- PHP errors related to unserialize() or object injection
Network Indicators:
- HTTP requests with serialized data in parameters
- Unusual traffic to /wp-content/plugins/booking-and-rental-manager-for-woocommerce/
SIEM Query:
source="wordpress.log" AND ("unserialize" OR "booking-and-rental-manager")