CVE-2025-32655
📋 TL;DR
This CSRF vulnerability in the WordPress Restrict User Registration plugin allows attackers to trick authenticated administrators into performing unintended actions, leading to stored cross-site scripting (XSS). Attackers can inject malicious scripts that execute when other users view affected pages. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- WordPress Restrict User Registration 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 inject persistent malicious scripts that steal administrator credentials, hijack user sessions, deface websites, or redirect users to malicious sites when any user visits compromised pages.
Likely Case
Attackers create fake forms or links that trick logged-in administrators into unknowingly adding malicious JavaScript to the site, which then executes in visitors' browsers.
If Mitigated
With proper CSRF protections and content security policies, the attack would fail or have limited impact even if attempted.
🎯 Exploit Status
CSRF attacks are well-understood and easy to weaponize. Requires social engineering to trick administrators.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 1.0.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Restrict User Registration'. 4. Click 'Update Now' if available. 5. If no update appears, deactivate and delete the plugin, then install the latest version from WordPress repository.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the Restrict User Registration plugin until patched
wp plugin deactivate restrict-user-registration
Implement CSRF protection headers
allAdd Content Security Policy headers to limit script execution
Add to .htaccess: Header set Content-Security-Policy "script-src 'self'"
Add to wp-config.php: define('FORCE_SSL_ADMIN', true);
🧯 If You Can't Patch
- Remove the Restrict User Registration plugin entirely and use alternative user registration management solutions.
- Implement strict access controls limiting administrative functions to specific trusted IP addresses only.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins. If Restrict User Registration version is 1.0.1 or earlier, you are vulnerable.Check Version:
wp plugin get restrict-user-registration --field=versionVerify Fix Applied:
After updating, verify the plugin version shows higher than 1.0.1 in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin/admin-ajax.php or plugin-specific endpoints from unexpected referrers
- Administrator accounts performing plugin configuration changes from unusual IP addresses
Network Indicators:
- HTTP requests containing malicious script payloads in POST parameters
- Cross-origin requests to administrative endpoints
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-admin/admin-ajax.php" OR uri_path CONTAINS "restrict-user-registration") AND http_method="POST" AND referrer NOT CONTAINS own_domain