CVE-2025-11885
📋 TL;DR
The EchBay Admin Security WordPress plugin is vulnerable to reflected cross-site scripting (XSS) via the '_ebnonce' parameter. Unauthenticated attackers can inject malicious scripts that execute when users click specially crafted links. All WordPress sites using this plugin up to version 1.3.0 are affected.
💻 Affected Systems
- EchBay Admin Security 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 steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users if they can trick administrators into clicking malicious links.
Likely Case
Attackers will use this to steal session cookies or redirect users to phishing pages, potentially compromising user accounts.
If Mitigated
With proper web application firewalls and user awareness training, impact is limited to unsuccessful phishing attempts.
🎯 Exploit Status
Reflected XSS vulnerabilities are commonly weaponized in phishing campaigns and require minimal technical skill to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 1.3.0
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'EchBay Admin Security' and click 'Update Now'. 4. Verify plugin version is greater than 1.3.0.
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock requests containing malicious script patterns in the '_ebnonce' parameter
Disable Plugin
linuxTemporarily disable the EchBay Admin Security plugin until patched
wp plugin deactivate echbay-admin-security
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Deploy a web application firewall with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins → EchBay Admin Security versionCheck Version:
wp plugin get echbay-admin-security --field=versionVerify Fix Applied:
Verify plugin version is greater than 1.3.0 and test '_ebnonce' parameter with XSS payloads📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing script tags or JavaScript in '_ebnonce' parameter
- Multiple failed XSS attempts from same IP
Network Indicators:
- Unusual GET requests with encoded script payloads in query parameters
SIEM Query:
source="web_logs" AND ("_ebnonce" AND ("<script" OR "javascript:" OR "onerror="))