CVE-2024-50428 in Multi Step Form Plugin
Summary
by MITRE • 10/30/2024
Missing Authorization vulnerability in mondula2016 Multi Step Form multi-step-form allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Multi Step Form: from n/a through <= 1.7.21.
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Analysis
by VulDB Data Team • 04/07/2026
The vulnerability identified as CVE-2024-50428 represents a critical missing authorization flaw within the mondula2016 Multi Step Form plugin, specifically impacting versions ranging from the initial release through version 1.7.21. This security weakness manifests as an incorrectly configured access control mechanism that permits unauthorized users to exploit functionality that should be restricted to authenticated administrators. The issue resides in the plugin's multi-step form implementation where proper access control checks are either absent or improperly enforced, creating a pathway for malicious actors to bypass intended security boundaries.
The technical exploitation of this vulnerability stems from insufficient validation of user permissions within the plugin's codebase. When users interact with multi-step forms, the application should verify that each action is performed by an authorized individual with appropriate privileges. However, the current implementation fails to properly authenticate and authorize users before granting access to administrative functions or sensitive data processing capabilities. This misconfiguration allows attackers to manipulate form workflows, potentially accessing restricted form configurations, modifying form structures, or executing unauthorized operations that should only be available to privileged users. The vulnerability operates at the application level where access control decisions are made, making it particularly dangerous as it can be exploited through various user interaction points within the form management interface.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass potential data integrity compromise and privilege escalation within affected systems. Attackers could leverage this weakness to modify form configurations, inject malicious content, or potentially gain deeper access to the underlying WordPress installation. The multi-step nature of the forms amplifies the risk as each stage of the form workflow could be compromised, allowing attackers to manipulate the entire form processing sequence. This vulnerability directly violates the principle of least privilege and can result in unauthorized modification of form data, configuration changes, and potential access to sensitive information processed through these forms. The impact is particularly severe in environments where these forms handle confidential data such as user registrations, contact information, or business-critical submissions.
Organizations affected by this vulnerability should prioritize immediate remediation through the application of available patches or updates to version 1.7.22 or later, as this represents the first fixed release addressing the authorization bypass issue. System administrators should conduct thorough vulnerability assessments to identify any potential exploitation attempts or unauthorized modifications that may have occurred. The remediation process should include verification of form configurations, review of user access controls, and implementation of additional monitoring for suspicious activities related to form management functions. Security teams should also consider implementing network-level restrictions and access controls to limit exposure while patches are being deployed. This vulnerability aligns with CWE-285, which addresses improper authorization issues, and represents a clear violation of the ATT&CK technique T1078 for valid accounts and T1548 for abuse of privileges, as it enables unauthorized access to administrative functions through improperly configured security controls.