CVE-2025-23511
📋 TL;DR
A Cross-Site Request Forgery (CSRF) vulnerability in the WP-BlackCheck WordPress plugin allows attackers to perform actions as authenticated users, leading to stored cross-site scripting (XSS). This affects WordPress sites using WP-BlackCheck plugin versions up to 2.7.2. Attackers can inject malicious scripts that execute when other users visit affected pages.
💻 Affected Systems
- WP-BlackCheck 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 inject persistent malicious scripts that steal admin credentials, deface websites, redirect visitors to malicious sites, or install backdoors on the WordPress installation.
Likely Case
Attackers inject malicious JavaScript that steals session cookies or credentials from authenticated users, potentially compromising admin accounts.
If Mitigated
With proper CSRF protections and content security policies, the attack surface is reduced, though the vulnerability still exists in the codebase.
🎯 Exploit Status
Exploitation requires tricking an authenticated user (typically an admin) to click a malicious link or visit a crafted page. The CSRF leads to stored XSS payload injection.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 2.7.2
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find WP-BlackCheck and click 'Update Now' if available. 4. If no update is available, deactivate and delete the plugin immediately.
🔧 Temporary Workarounds
Implement CSRF Protection Headers
allAdd Content Security Policy (CSP) headers to limit script execution sources and implement anti-CSRF tokens via security plugins.
Disable WP-BlackCheck Plugin
WordPressTemporarily deactivate the WP-BlackCheck plugin until patched.
wp plugin deactivate wp-blackcheck
🧯 If You Can't Patch
- Remove WP-BlackCheck plugin completely from the WordPress installation.
- Implement web application firewall (WAF) rules to block CSRF attempts and XSS payloads.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for WP-BlackCheck version. If version is 2.7.2 or earlier, you are vulnerable.Check Version:
wp plugin get wp-blackcheck --field=versionVerify Fix Applied:
After update, verify WP-BlackCheck version is higher than 2.7.2 in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WP-BlackCheck admin endpoints without referrer headers
- JavaScript injection patterns in plugin-related database entries
Network Indicators:
- CSRF attack patterns with malicious payloads targeting /wp-admin/ endpoints
SIEM Query:
source="wordpress" AND (uri_path="/wp-admin/admin-ajax.php" OR uri_path CONTAINS "wp-blackcheck") AND http_method="POST" AND referrer=""