CVE-2025-49927
📋 TL;DR
This stored XSS vulnerability in the JetWooBuilder 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 JetWooBuilder versions up to and including 2.1.20.1. The vulnerability enables attackers to steal session cookies, redirect users, or perform actions on their behalf.
💻 Affected Systems
- CrocoBlock JetWooBuilder
⚠️ 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 credentials, take over the WordPress site, install backdoors, or redirect all visitors to malicious sites, potentially compromising the entire web server and user data.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, potentially gaining unauthorized access to user accounts, or perform phishing attacks by modifying page content.
If Mitigated
With proper input validation and output encoding, the malicious scripts would be neutralized, preventing execution while maintaining normal plugin functionality.
🎯 Exploit Status
Exploitation requires the ability to inject malicious input into the affected plugin components, which typically requires some level of access or interaction with the vulnerable functionality.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 2.1.20.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find JetWooBuilder and click 'Update Now' if available. 4. Alternatively, download the latest version from WordPress.org and manually update. 5. Verify the plugin version is greater than 2.1.20.1.
🔧 Temporary Workarounds
Disable JetWooBuilder Plugin
allTemporarily disable the vulnerable plugin until patching is possible
wp plugin deactivate jet-woo-builder
Implement WAF Rules
allConfigure web application firewall to block XSS payloads targeting JetWooBuilder endpoints
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to prevent script execution from unauthorized sources
- Enable WordPress security plugins with XSS protection features and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check the JetWooBuilder plugin version in WordPress admin under Plugins > Installed PluginsCheck Version:
wp plugin get jet-woo-builder --field=versionVerify Fix Applied:
Confirm the plugin version is greater than 2.1.20.1 and test the previously vulnerable functionality📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to JetWooBuilder endpoints containing script tags or JavaScript code
- Multiple failed login attempts following suspicious plugin activity
Network Indicators:
- HTTP requests with suspicious parameters containing <script> tags or JavaScript events
- Unexpected outbound connections from the WordPress server
SIEM Query:
source="wordpress.log" AND ("jet-woo-builder" OR "jetwoobuilder") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")