CVE-2024-11132
📋 TL;DR
The Eventer WordPress plugin up to version 3.9.9 has a stored XSS vulnerability in shortcode attributes. Authenticated attackers with contributor-level permissions or higher can inject malicious scripts that execute when users view affected pages. This affects WordPress sites using vulnerable versions of the Eventer plugin.
💻 Affected Systems
- Eventer WordPress Event Manager Plugin
📦 What is this software?
Eventer by Imithemes
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal admin credentials, redirect users to malicious sites, deface websites, or install backdoors for persistent access.
Likely Case
Attackers with contributor accounts inject malicious scripts to steal user session cookies or display phishing content to visitors.
If Mitigated
With proper user access controls and content security policies, impact is limited to potential data leakage from affected pages.
🎯 Exploit Status
Exploitation requires authenticated access but is technically simple once an attacker has contributor-level credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.10.0 or later
Vendor Advisory: https://codecanyon.net/item/eventer-wordpress-event-manager-plugin/20972534
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Eventer plugin and click 'Update Now'. 4. Verify version is 3.10.0 or higher.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the Eventer plugin until patched
wp plugin deactivate eventer
Restrict User Roles
allRemove contributor-level permissions from untrusted users
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Regularly audit user accounts and remove unnecessary contributor-level permissions
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Eventer version. If version is 3.9.9 or lower, you are vulnerable.Check Version:
wp plugin get eventer --field=versionVerify Fix Applied:
After updating, confirm Eventer plugin version is 3.10.0 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusual shortcode modifications in post/page edits
- Multiple failed login attempts followed by successful contributor login
Network Indicators:
- Unexpected script tags in Eventer plugin page responses
- External script loads from Eventer pages
SIEM Query:
source="wordpress" AND (event="plugin_update" AND plugin="eventer" AND version<"3.10.0") OR (event="post_edit" AND user_role="contributor" AND content CONTAINS "[eventer" AND script_tags>0)