CVE-2025-27301
📋 TL;DR
This vulnerability allows attackers to inject malicious objects through deserialization of untrusted data in the NHR Options Table Manager WordPress plugin. Successful exploitation could lead to remote code execution or data manipulation. All WordPress sites using affected plugin versions are at risk.
💻 Affected Systems
- NHR Options Table Manager 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 PHP object injection leading to data manipulation, privilege escalation, or limited code execution.
If Mitigated
Attack blocked at WAF level or plugin disabled, minimal impact.
🎯 Exploit Status
Requires understanding of PHP object injection techniques and WordPress plugin structure.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.1.2
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'NHR Options Table Manager'. 4. Click 'Update Now' if update available. 5. If no update, deactivate and remove plugin.
🔧 Temporary Workarounds
Disable Plugin
WordPressDeactivate the vulnerable plugin to prevent exploitation.
wp plugin deactivate nhrrob-options-table-manager
🧯 If You Can't Patch
- Implement WAF rules to block deserialization attempts
- Restrict plugin access to trusted IP addresses only
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → NHR Options Table Manager version. If version is 1.1.2 or lower, you are vulnerable.Check Version:
wp plugin get nhrrob-options-table-manager --field=versionVerify Fix Applied:
Verify plugin version is higher than 1.1.2 or plugin is completely removed.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints
- PHP deserialization errors in logs
- Unexpected plugin file modifications
Network Indicators:
- HTTP requests containing serialized PHP objects
- Traffic to plugin-specific endpoints with unusual payloads
SIEM Query:
source="wordpress.log" AND ("nhrrob-options-table-manager" OR "deserialization")