CVE-2024-50428
📋 TL;DR
This CVE describes a Missing Authorization vulnerability in Mondula GmbH's Multi Step Form WordPress plugin that allows attackers to bypass access controls. It affects all versions up to 1.7.21, potentially enabling unauthorized access to form data or administrative functions. WordPress site administrators using this plugin are affected.
💻 Affected Systems
- Mondula GmbH Multi Step Form WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access sensitive form submissions, modify form configurations, or potentially escalate privileges to compromise the WordPress site.
Likely Case
Unauthorized viewing or manipulation of form data submitted by users, potentially exposing PII or other sensitive information.
If Mitigated
Proper access controls would prevent unauthorized access, limiting impact to legitimate users only.
🎯 Exploit Status
Missing authorization vulnerabilities typically have low exploitation complexity as they involve accessing endpoints without proper checks.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.7.22 or later
Vendor Advisory: https://patchstack.com/database/vulnerability/multi-step-form/wordpress-multi-step-form-plugin-1-7-21-broken-access-control-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Multi Step Form' and click 'Update Now'. 4. Verify update to version 1.7.22 or higher.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate multi-step-form
Restrict Access
allUse web application firewall rules to restrict access to plugin endpoints
# Add WAF rules to block unauthorized access to /wp-content/plugins/multi-step-form/
🧯 If You Can't Patch
- Implement strict network segmentation to isolate WordPress installation
- Enable detailed logging and monitoring for unauthorized access attempts to plugin endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Multi Step Form → Version. If version is 1.7.21 or lower, you are vulnerable.Check Version:
wp plugin get multi-step-form --field=versionVerify Fix Applied:
After updating, verify version shows 1.7.22 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to /wp-content/plugins/multi-step-form/ endpoints
- Multiple failed authentication attempts followed by successful access to form data
Network Indicators:
- Unusual traffic patterns to plugin-specific endpoints from unexpected sources
- HTTP requests bypassing normal authentication flows
SIEM Query:
source="wordpress.log" AND (uri="/wp-content/plugins/multi-step-form/*" AND NOT user_agent="WordPress/*")