CVE-2025-48343
📋 TL;DR
This CSRF vulnerability in the WPMU Ldap Authentication WordPress plugin allows attackers to trick authenticated administrators into executing malicious actions, leading to stored cross-site scripting (XSS). Attackers can inject malicious scripts that execute in victims' browsers when they visit compromised pages. This affects all WordPress sites using WPMU Ldap Authentication versions up to and including 5.0.1.
💻 Affected Systems
- WPMU Ldap Authentication 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 administrator credentials, hijack sessions, deface websites, or redirect users to malicious sites, potentially leading to complete site compromise.
Likely Case
Attackers create fake admin interfaces or forms that trick logged-in administrators into executing actions that inject malicious JavaScript, leading to session hijacking or credential theft.
If Mitigated
With proper CSRF protections and input validation, the attack would fail at the initial request stage, preventing any XSS payload from being stored or executed.
🎯 Exploit Status
Exploitation requires tricking an authenticated administrator into visiting a malicious page while logged in. No authentication bypass is needed once the CSRF is successful.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.0.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'WPMU Ldap Authentication'. 4. Click 'Update Now' if available, or download version 5.0.2+ from WordPress repository. 5. Activate the updated plugin.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
allDisable the vulnerable plugin until patching is possible
wp plugin deactivate wpmuldap
CSRF Protection Middleware
allImplement additional CSRF tokens via security plugins or custom code
🧯 If You Can't Patch
- Disable the WPMU Ldap Authentication plugin entirely and use alternative authentication methods
- Implement strict Content Security Policy (CSP) headers to mitigate XSS impact
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for WPMU Ldap Authentication version. If version is 5.0.1 or lower, you are vulnerable.Check Version:
wp plugin get wpmuldap --field=versionVerify Fix Applied:
Verify plugin version shows 5.0.2 or higher in WordPress admin plugins page📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin/admin-ajax.php or plugin-specific endpoints without proper referrer/CSRF tokens
- Multiple failed authentication attempts followed by successful admin actions
Network Indicators:
- Unexpected JavaScript payloads in HTTP POST parameters to plugin endpoints
- Cross-origin requests to admin interfaces without proper CORS headers
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-admin/admin-ajax.php" OR uri_path CONTAINS "wpmuldap") AND http_method="POST" AND (NOT referrer CONTAINS own_domain OR csrf_token="")