CVE-2024-13577
📋 TL;DR
The CATS Job Listings WordPress plugin has a stored XSS vulnerability that allows authenticated attackers with contributor-level access or higher to inject malicious scripts into website pages. These scripts execute whenever users view the compromised pages, potentially stealing credentials or performing unauthorized actions. All WordPress sites using this plugin up to version 2.0.9 are affected.
💻 Affected Systems
- CATS Job Listings WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, deface websites, redirect users to malicious sites, or install backdoors for persistent access.
Likely Case
Attackers with contributor access inject malicious scripts to steal user session cookies or credentials, potentially gaining higher privileges.
If Mitigated
With proper user access controls and content security policies, impact is limited to script execution in the context of the vulnerable page.
🎯 Exploit Status
Exploitation requires authenticated access but is technically simple once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.0 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3158989/cats-job-listings/trunk/CATSJobListingUser.php
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'CATS Job Listings' and click 'Update Now'. 4. Verify version is 2.1.0 or higher.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate cats-job-listings
Restrict User Roles
allRemove contributor-level access from untrusted users
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Add WAF rules to block XSS payloads in shortcode attributes
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for CATS Job Listings versionCheck Version:
wp plugin get cats-job-listings --field=versionVerify Fix Applied:
Verify plugin version is 2.1.0 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WordPress admin with script-like content in parameters
- Multiple failed login attempts followed by successful contributor login
Network Indicators:
- Outbound connections to suspicious domains from WordPress server
- Unusual JavaScript payloads in HTTP requests
SIEM Query:
source="wordpress.log" AND ("catsone" OR "cats-job-listings") AND ("script" OR "javascript:" OR "onerror=" OR "onload=")