CVE-2024-1940
📋 TL;DR
The Brizy Page Builder WordPress plugin has a stored XSS vulnerability that allows authenticated attackers with contributor-level access or higher to inject malicious scripts into pages. These scripts execute whenever users view the compromised pages, potentially affecting all visitors to vulnerable WordPress sites.
💻 Affected Systems
- Brizy - Page Builder WordPress plugin
📦 What is this software?
Brizy by Brizy
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, redirect users to malicious sites, deface websites, or perform actions on behalf of authenticated users, potentially leading to complete site compromise.
Likely Case
Attackers with contributor access inject malicious scripts to steal user session cookies or redirect visitors to phishing sites, compromising user accounts and site integrity.
If Mitigated
With proper user role management and input validation, impact is limited to defacement or minor content manipulation by trusted users.
🎯 Exploit Status
Exploitation requires authenticated access with contributor privileges or higher. The vulnerability is in post content handling with insufficient server-side validation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.4.42 and later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3055256%40brizy&new=3055256%40brizy&sfp_email=&sfph_mail=
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Brizy Page Builder and click 'Update Now'. 4. Verify update to version 2.4.42 or higher.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
allDisable Brizy plugin until patched to prevent exploitation
wp plugin deactivate brizy
Restrict User Roles
allTemporarily remove contributor roles or limit access to trusted users only
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to limit script execution
- Use web application firewall (WAF) rules to block XSS payloads in post content
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Brizy Page Builder version. If version is 2.4.41 or lower, you are vulnerable.Check Version:
wp plugin get brizy --field=versionVerify Fix Applied:
After updating, confirm Brizy plugin version is 2.4.42 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual post content modifications by contributor-level users
- Script tags or JavaScript in post content from non-admin users
Network Indicators:
- Unexpected script loads from Brizy-generated pages
- Suspicious redirects from Brizy content
SIEM Query:
source="wordpress" AND (plugin="brizy" AND (event="post_modified" OR event="content_update") AND user_role="contributor")🔗 References
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3055256%40brizy&new=3055256%40brizy&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e056dcb5-a66b-4cd3-9a73-37f226015e09?source=cve
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3055256%40brizy&new=3055256%40brizy&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e056dcb5-a66b-4cd3-9a73-37f226015e09?source=cve
