The SentinelOne Annual Threat Report - A Defenders Guide from the FrontlinesThe SentinelOne Annual Threat ReportGet the Report
Experiencing a Breach?Blog
Get StartedContact Us
SentinelOne
  • Platform
    Platform Overview
    • Singularity Platform
      Welcome to Integrated Enterprise Security
    • AI for Security
      Leading the Way in AI-Powered Security Solutions
    • Securing AI
      Accelerate AI Adoption with Secure AI Tools, Apps, and Agents.
    • How It Works
      The Singularity XDR Difference
    • Singularity Marketplace
      One-Click Integrations to Unlock the Power of XDR
    • Pricing & Packaging
      Comparisons and Guidance at a Glance
    Data & AI
    • Purple AI
      Accelerate SecOps with Generative AI
    • Singularity Hyperautomation
      Easily Automate Security Processes
    • AI-SIEM
      The AI SIEM for the Autonomous SOC
    • AI Data Pipelines
      Security Data Pipeline for AI SIEM and Data Optimization
    • Singularity Data Lake
      AI-Powered, Unified Data Lake
    • Singularity Data Lake for Log Analytics
      Seamlessly Ingest Data from On-Prem, Cloud or Hybrid Environments
    Endpoint Security
    • Singularity Endpoint
      Autonomous Prevention, Detection, and Response
    • Singularity XDR
      Native & Open Protection, Detection, and Response
    • Singularity RemoteOps Forensics
      Orchestrate Forensics at Scale
    • Singularity Threat Intelligence
      Comprehensive Adversary Intelligence
    • Singularity Vulnerability Management
      Application & OS Vulnerability Management
    • Singularity Identity
      Identity Threat Detection and Response
    Cloud Security
    • Singularity Cloud Security
      Block Attacks with an AI-Powered CNAPP
    • Singularity Cloud Native Security
      Secure Cloud and Development Resources
    • Singularity Cloud Workload Security
      Real-Time Cloud Workload Protection Platform
    • Singularity Cloud Data Security
      AI-Powered Threat Detection for Cloud Storage
    • Singularity Cloud Security Posture Management
      Detect and Remediate Cloud Misconfigurations
    Securing AI
    • Prompt Security
      Secure AI Tools Across Your Enterprise
  • Why SentinelOne?
    Why SentinelOne?
    • Why SentinelOne?
      Cybersecurity Built for What’s Next
    • Our Customers
      Trusted by the World’s Leading Enterprises
    • Industry Recognition
      Tested and Proven by the Experts
    • About Us
      The Industry Leader in Autonomous Cybersecurity
    Compare SentinelOne
    • Arctic Wolf
    • Broadcom
    • CrowdStrike
    • Cybereason
    • Microsoft
    • Palo Alto Networks
    • Sophos
    • Splunk
    • Trellix
    • Trend Micro
    • Wiz
    Verticals
    • Energy
    • Federal Government
    • Finance
    • Healthcare
    • Higher Education
    • K-12 Education
    • Manufacturing
    • Retail
    • State and Local Government
  • Services
    Managed Services
    • Managed Services Overview
      Wayfinder Threat Detection & Response
    • Threat Hunting
      World-Class Expertise and Threat Intelligence
    • Managed Detection & Response
      24/7/365 Expert MDR Across Your Entire Environment
    • Incident Readiness & Response
      DFIR, Breach Readiness, & Compromise Assessments
    Support, Deployment, & Health
    • Technical Account Management
      Customer Success with Personalized Service
    • SentinelOne GO
      Guided Onboarding & Deployment Advisory
    • SentinelOne University
      Live and On-Demand Training
    • Services Overview
      Comprehensive Solutions for Seamless Security Operations
    • SentinelOne Community
      Community Login
  • Partners
    Our Network
    • MSSP Partners
      Succeed Faster with SentinelOne
    • Singularity Marketplace
      Extend the Power of S1 Technology
    • Cyber Risk Partners
      Enlist Pro Response and Advisory Teams
    • Technology Alliances
      Integrated, Enterprise-Scale Solutions
    • SentinelOne for AWS
      Hosted in AWS Regions Around the World
    • Channel Partners
      Deliver the Right Solutions, Together
    • SentinelOne for Google Cloud
      Unified, Autonomous Security Giving Defenders the Advantage at Global Scale
    • Partner Locator
      Your Go-to Source for Our Top Partners in Your Region
    Partner Portal→
  • Resources
    Resource Center
    • Case Studies
    • Data Sheets
    • eBooks
    • Reports
    • Videos
    • Webinars
    • Whitepapers
    • Events
    View All Resources→
    Blog
    • Feature Spotlight
    • For CISO/CIO
    • From the Front Lines
    • Identity
    • Cloud
    • macOS
    • SentinelOne Blog
    Blog→
    Tech Resources
    • SentinelLABS
    • Ransomware Anthology
    • Cybersecurity 101
  • About
    About SentinelOne
    • About SentinelOne
      The Industry Leader in Cybersecurity
    • Investor Relations
      Financial Information & Events
    • SentinelLABS
      Threat Research for the Modern Threat Hunter
    • Careers
      The Latest Job Opportunities
    • Press & News
      Company Announcements
    • Cybersecurity Blog
      The Latest Cybersecurity Threats, News, & More
    • FAQ
      Get Answers to Our Most Frequently Asked Questions
    • DataSet
      The Live Data Platform
    • S Foundation
      Securing a Safer Future for All
    • S Ventures
      Investing in the Next Generation of Security, Data and AI
  • Pricing
Get StartedContact Us
CVE Vulnerability Database
Vulnerability Database/CVE-2024-50428

CVE-2024-50428: Multi Step Form Auth Bypass Vulnerability

CVE-2024-50428 is an authorization bypass flaw in Mondula Multi Step Form plugin that allows attackers to exploit misconfigured access controls. This article covers technical details, affected versions, and mitigation.

Published: April 15, 2026

CVE-2024-50428 Overview

CVE-2024-50428 is a Missing Authorization vulnerability affecting the Mondula Multi Step Form plugin for WordPress. This broken access control flaw allows attackers to exploit incorrectly configured access control security levels, potentially enabling unauthorized actions on vulnerable WordPress installations. The vulnerability stems from missing authorization checks (CWE-862), which permits unauthenticated users to perform privileged operations that should be restricted.

Critical Impact

This vulnerability allows remote unauthenticated attackers to bypass access controls and perform unauthorized actions on WordPress sites running the affected Multi Step Form plugin, potentially leading to complete site compromise.

Affected Products

  • Mondula Multi Step Form plugin for WordPress version 1.7.21 and earlier
  • WordPress installations utilizing the multi-step-form plugin

Discovery Timeline

  • 2024-10-29 - CVE-2024-50428 published to NVD
  • 2026-04-01 - Last updated in NVD database

Technical Details for CVE-2024-50428

Vulnerability Analysis

This vulnerability exists due to missing authorization checks within the Mondula Multi Step Form WordPress plugin. The plugin fails to properly verify user permissions before allowing access to sensitive functionality, creating a broken access control condition. Without proper authorization validation, the plugin permits unauthenticated users to access administrative or privileged endpoints that should require authentication and appropriate user roles.

The impact of this vulnerability is severe as it can lead to unauthorized modification of form configurations, data exfiltration of submitted form entries, or manipulation of plugin settings. Given the plugin's function of handling multi-step forms, attackers could potentially access sensitive user-submitted data or modify form behavior for malicious purposes such as phishing or data harvesting.

Root Cause

The root cause of CVE-2024-50428 is the absence of proper capability checks and nonce verification in critical plugin functions. WordPress plugins should implement current_user_can() checks to verify user permissions before executing privileged operations, along with nonce validation to prevent unauthorized requests. The Multi Step Form plugin lacks these essential security controls, allowing any user—including unauthenticated visitors—to invoke restricted functionality.

Attack Vector

The attack is network-based and requires no authentication or user interaction. An attacker can exploit this vulnerability remotely by sending crafted HTTP requests directly to vulnerable WordPress AJAX handlers or REST API endpoints exposed by the plugin. Due to the missing authorization checks, these requests are processed without validating that the requester has appropriate permissions.

The vulnerability manifests in AJAX action handlers that process form management operations without verifying user capabilities. Attackers can enumerate and target these endpoints to perform unauthorized actions. For detailed technical information, see the Patchstack WordPress Vulnerability Advisory.

Detection Methods for CVE-2024-50428

Indicators of Compromise

  • Unexpected modifications to Multi Step Form plugin configurations or form definitions
  • Unauthorized access to form submission data or export activities
  • Anomalous HTTP requests to WordPress AJAX endpoints containing multi-step-form action parameters
  • Unusual administrative actions in WordPress logs without corresponding authenticated sessions

Detection Strategies

  • Monitor WordPress AJAX endpoint access logs for requests to Multi Step Form plugin actions from unauthenticated sessions
  • Implement Web Application Firewall (WAF) rules to detect and block suspicious requests targeting admin-ajax.php with Multi Step Form action parameters
  • Review WordPress database for unauthorized changes to plugin configuration tables
  • Deploy file integrity monitoring to detect unauthorized plugin file modifications

Monitoring Recommendations

  • Enable detailed WordPress access logging and review logs for patterns of exploitation attempts
  • Configure alerting for any administrative changes to Multi Step Form plugin settings
  • Monitor for bulk data access patterns that may indicate form submission data exfiltration
  • Implement real-time security monitoring with SentinelOne Singularity to detect post-exploitation activity

How to Mitigate CVE-2024-50428

Immediate Actions Required

  • Update the Multi Step Form plugin to the latest patched version immediately
  • Audit existing form configurations and submission data for signs of unauthorized access
  • Review WordPress user accounts for any unauthorized additions or privilege escalations
  • Implement a Web Application Firewall to add an additional layer of protection for WordPress sites

Patch Information

Site administrators should update the Mondula Multi Step Form plugin to a version newer than 1.7.21. Check the WordPress plugin repository or the official Mondula website for the latest security update. Before updating, create a full backup of your WordPress installation including the database.

For the latest patch information and security guidance, refer to the Patchstack WordPress Vulnerability Advisory.

Workarounds

  • If immediate patching is not possible, temporarily deactivate the Multi Step Form plugin until an update can be applied
  • Restrict access to WordPress admin AJAX endpoints using server-level access controls or .htaccess rules
  • Implement additional authentication layers for WordPress administration using security plugins
  • Monitor and audit all plugin activity until the vulnerability is remediated
bash
# Temporary mitigation - restrict AJAX access to authenticated users only
# Add to .htaccess in WordPress root directory
<Files admin-ajax.php>
    Order deny,allow
    Deny from all
    # Allow specific trusted IPs
    Allow from 192.168.1.0/24
</Files>

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

  • Vulnerability Details
  • TypeAuth Bypass

  • Vendor/TechMondula Multi Step Form

  • SeverityCRITICAL

  • CVSS Score9.8

  • EPSS Probability0.48%

  • Known ExploitedNo
  • CVSS Vector
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Impact Assessment
  • ConfidentialityLow
  • IntegrityNone
  • AvailabilityHigh
  • CWE References
  • CWE-862
  • Technical References
  • Patchstack WordPress Vulnerability
  • Latest CVEs
  • CVE-2026-8468: Elixir Plug Library DoS Vulnerability

  • CVE-2026-8295: simdjson Information Disclosure Vulnerability

  • CVE-2025-68421: Comarch ERP Optima Auth Bypass Vulnerability

  • CVE-2025-68420: Comarch ERP Optima Privilege Escalation
Default Legacy - Prefooter | Experience the World’s Most Advanced Cybersecurity Platform

Experience the World’s Most Advanced Cybersecurity Platform

See how our intelligent, autonomous cybersecurity platform can protect your organization now and into the future.

Try SentinelOne
  • Get Started
  • Get a Demo
  • Product Tour
  • Why SentinelOne
  • Pricing & Packaging
  • FAQ
  • Contact
  • Contact Us
  • Customer Support
  • SentinelOne Status
  • Language
  • Platform
  • Singularity Platform
  • Singularity Endpoint
  • Singularity Cloud
  • Singularity AI-SIEM
  • Singularity Identity
  • Singularity Marketplace
  • Purple AI
  • Services
  • Wayfinder TDR
  • SentinelOne GO
  • Technical Account Management
  • Support Services
  • Verticals
  • Energy
  • Federal Government
  • Finance
  • Healthcare
  • Higher Education
  • K-12 Education
  • Manufacturing
  • Retail
  • State and Local Government
  • Cybersecurity for SMB
  • Resources
  • Blog
  • Labs
  • Case Studies
  • Videos
  • Product Tours
  • Events
  • Cybersecurity 101
  • eBooks
  • Webinars
  • Whitepapers
  • Press
  • News
  • Ransomware Anthology
  • Company
  • About Us
  • Our Customers
  • Careers
  • Partners
  • Legal & Compliance
  • Security & Compliance
  • Investor Relations
  • S Foundation
  • S Ventures

©2026 SentinelOne, All Rights Reserved.

Privacy Notice Terms of Use

English