CVE-2024-11190
📋 TL;DR
The jwp-a11y WordPress plugin through version 4.1.7 contains a stored cross-site scripting (XSS) vulnerability in its settings. This allows authenticated administrators to inject malicious scripts that execute when other users view affected pages, even in WordPress multisite installations where unfiltered_html capabilities are restricted. Only WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- jwp-a11y WordPress plugin
📦 What is this software?
Jwp A11y by Jidaikobo
⚠️ Risk & Real-World Impact
Worst Case
An attacker with admin privileges could inject malicious JavaScript that steals session cookies, redirects users to phishing sites, or performs actions on behalf of authenticated users, potentially leading to complete site compromise.
Likely Case
Malicious administrator or compromised admin account injects tracking scripts or defaces the website by modifying plugin settings with XSS payloads.
If Mitigated
Limited to plugin settings pages only, affecting only users with access to those administrative interfaces.
🎯 Exploit Status
Exploitation requires administrator-level access to WordPress. No public exploit code has been identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.1.8 or later
Vendor Advisory: https://wpscan.com/vulnerability/66b914ba-4253-4849-a38a-05ab246a9a32/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'jwp-a11y' plugin. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 4.1.8+ from WordPress.org and manually update.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the jwp-a11y plugin until patched version is available
wp plugin deactivate jwp-a11y
Restrict admin access
allImplement strict access controls and monitoring for administrator accounts
🧯 If You Can't Patch
- Remove administrator access from untrusted users and implement principle of least privilege
- Implement web application firewall (WAF) rules to block XSS payloads in plugin settings
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for jwp-a11y version. If version is 4.1.7 or lower, system is vulnerable.Check Version:
wp plugin get jwp-a11y --field=versionVerify Fix Applied:
Confirm jwp-a11y plugin version is 4.1.8 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual modifications to jwp-a11y plugin settings
- Administrator account activity from unexpected locations/times
Network Indicators:
- HTTP POST requests to wp-admin/admin.php?page=jwp-a11y with script tags in parameters
SIEM Query:
source="wordpress.log" AND ("jwp-a11y" AND "update_option") AND ("<script" OR "javascript:")