CVE-2025-54719
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code through insecure deserialization in the NooTheme Yogi WordPress theme. Attackers can inject malicious objects that get deserialized and executed, potentially leading to complete system compromise. All WordPress sites using Yogi theme version 2.9.2 or earlier are affected.
💻 Affected Systems
- NooTheme Yogi - Health Beauty & Yoga WordPress Theme
⚠️ 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 server takeover, data theft, and installation of persistent backdoors.
Likely Case
Website defacement, data exfiltration, and installation of malware or cryptocurrency miners.
If Mitigated
Limited impact with proper input validation and security controls, potentially only denial of service.
🎯 Exploit Status
Deserialization vulnerabilities are commonly exploited and often have public exploits available shortly after disclosure.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: > 2.9.2
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Appearance > Themes
3. Check for Yogi theme updates
4. Update to latest version
5. Clear WordPress cache
🔧 Temporary Workarounds
Disable vulnerable theme
allTemporarily switch to default WordPress theme to mitigate risk
wp theme activate twentytwentyfour
Input validation filter
allAdd custom filter to sanitize deserialization inputs
Add to theme's functions.php: add_filter('pre_deserialize', 'sanitize_untrusted_data');
🧯 If You Can't Patch
- Implement WAF rules to block deserialization attempts
- Restrict access to vulnerable endpoints using .htaccess or nginx rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Appearance > Themes for Yogi theme version 2.9.2 or earlierCheck Version:
wp theme list | grep yogiVerify Fix Applied:
Verify theme version is > 2.9.2 in WordPress admin or via wp-cli: wp theme list📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to theme endpoints
- PHP object injection patterns in access logs
- Unexpected file creation in wp-content
Network Indicators:
- HTTP requests containing serialized PHP objects
- Traffic to known exploit servers
SIEM Query:
source="wordpress.log" AND ("unserialize" OR "O:" OR "C:") AND "yogi"