CVE-2025-66066
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Envo Extra WordPress plugin allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. It affects all WordPress sites using Envo Extra plugin versions up to and including 1.9.11. Attackers can steal session cookies, redirect users, or perform actions on their behalf.
💻 Affected Systems
- EnvoThemes Envo Extra 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 administrator session cookies, take over WordPress sites, install backdoors, deface websites, or redirect visitors to malicious sites.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies or credentials, potentially compromising user accounts and performing unauthorized actions.
If Mitigated
With proper input validation and output encoding, the malicious scripts would be neutralized before reaching users, preventing exploitation.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited. While no public PoC is confirmed, the vulnerability type is well-understood and easily weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 1.9.12 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Envo Extra' and click 'Update Now'. 4. Alternatively, download version 1.9.12+ from WordPress repository and replace the plugin files.
🔧 Temporary Workarounds
Disable Envo Extra Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate envo-extra
Implement WAF Rules
allConfigure web application firewall to block XSS payloads targeting Envo Extra endpoints
🧯 If You Can't Patch
- Disable the Envo Extra plugin immediately
- Implement strict Content Security Policy (CSP) headers to mitigate XSS impact
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Envo Extra version. If version is 1.9.11 or lower, you are vulnerable.Check Version:
wp plugin get envo-extra --field=versionVerify Fix Applied:
After updating, verify Envo Extra version shows 1.9.12 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to Envo Extra endpoints containing script tags or JavaScript
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests with suspicious parameters containing <script>, javascript:, or encoded payloads
SIEM Query:
source="web_server_logs" AND (uri="*envo-extra*" AND (param="*<script>*" OR param="*javascript:*" OR param="*onerror=*"))