CVE-2025-53277
📋 TL;DR
A Cross-Site Request Forgery (CSRF) vulnerability in Infigo Software's IS-theme-companion WordPress plugin allows attackers to trick authenticated administrators into performing unintended actions, potentially leading to object injection. This affects WordPress sites using IS-theme-companion plugin versions up to 1.57. Attackers can exploit this to manipulate plugin functionality or inject malicious objects.
💻 Affected Systems
- Infigo Software IS-theme-companion 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
Attackers could achieve remote code execution, compromise the WordPress site, deface content, steal sensitive data, or create backdoors for persistent access.
Likely Case
Attackers would manipulate plugin settings, inject malicious objects, modify site content, or disrupt functionality through CSRF attacks against authenticated administrators.
If Mitigated
With proper CSRF protections and limited admin access, impact would be minimal to none, preventing unauthorized actions even if links are clicked.
🎯 Exploit Status
Exploitation requires social engineering to trick authenticated administrators, but CSRF attacks are well-understood and weaponization is likely given the high CVSS score.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.57
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'IS-theme-companion' plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and remove plugin, then install latest version from WordPress repository.
🔧 Temporary Workarounds
Implement CSRF Protection Headers
allAdd security headers to WordPress to help prevent CSRF attacks
Add to .htaccess: Header set X-Frame-Options "SAMEORIGIN"
Add to .htaccess: Header set Content-Security-Policy "frame-ancestors 'self'"
Restrict Admin Access
allLimit administrator access to trusted networks only
Add to .htaccess: Order Deny,Allow
Deny from all
Allow from 192.168.1.0/24 # Replace with your trusted network
🧯 If You Can't Patch
- Disable or remove the IS-theme-companion plugin entirely
- Implement strict network segmentation and limit admin panel access to trusted IP addresses only
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for IS-theme-companion version. If version is 1.57 or lower, you are vulnerable.Check Version:
wp plugin list --name=is-theme-companion --field=versionVerify Fix Applied:
After update, verify plugin version is higher than 1.57 in WordPress admin panel > Plugins > Installed Plugins.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin/admin-ajax.php with is_theme_companion actions
- Multiple failed CSRF token validations in WordPress logs
- Unexpected plugin setting changes in WordPress activity logs
Network Indicators:
- Suspicious referer headers in admin requests
- Cross-origin requests to WordPress admin endpoints
- Unusual traffic patterns to /wp-admin/ from unexpected sources
SIEM Query:
source="wordpress.log" AND ("is_theme_companion" OR "admin-ajax.php") AND ("POST" OR "csrf")