CVE-2024-31433 in Events Calendar Plugin
Summary
by MITRE • 04/15/2024
Cross-Site Request Forgery (CSRF) vulnerability in StellarWP The Events Calendar the-events-calendar.This issue affects The Events Calendar: from n/a through <= 6.3.0.
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Analysis
by VulDB Data Team • 04/02/2026
The CVE-2024-31433 vulnerability represents a critical cross-site request forgery flaw within the StellarWP The Events Calendar plugin for WordPress, specifically impacting versions up to and including 6.3.0. This vulnerability resides in the plugin's handling of user authentication tokens and request validation mechanisms, creating a significant security risk for WordPress installations that utilize this calendar plugin. The flaw stems from inadequate protection against unauthorized commands that could be executed on behalf of authenticated users, potentially allowing malicious actors to perform actions without the user's knowledge or consent. The vulnerability affects the plugin's administrative functions and user management capabilities, making it particularly dangerous for sites with multiple administrators or users with elevated privileges.
The technical implementation of this CSRF vulnerability involves the absence of proper anti-forgery tokens in critical plugin endpoints that handle calendar data modifications, event creation, and administrative settings changes. Attackers can exploit this weakness by crafting malicious web pages or emails that, when visited by an authenticated user, automatically submit requests to the vulnerable plugin endpoints. This flaw aligns with CWE-352, which specifically addresses Cross-Site Request Forgery vulnerabilities in web applications. The vulnerability demonstrates a failure in the principle of least privilege and proper request validation, where the plugin fails to verify that incoming requests originate from legitimate sources within the same origin domain.
The operational impact of this vulnerability extends beyond simple data modification, as it could enable attackers to manipulate calendar events, delete important entries, modify user permissions, or even gain unauthorized access to sensitive calendar data. Given that The Events Calendar plugin is widely used for managing public and private events, the potential for data compromise increases significantly. Attackers could leverage this vulnerability to disrupt event scheduling, inject malicious content into calendar entries, or perform unauthorized administrative actions that could affect entire site operations. The vulnerability also poses risks to user privacy and data integrity, particularly in organizations that rely on the plugin for business-critical scheduling functions. This type of vulnerability is categorized under the ATT&CK technique T1566.002 for credential access through phishing and social engineering, as it enables unauthorized access through manipulated user sessions.
Organizations affected by this vulnerability should immediately implement mitigations including applying the latest available security patches from the plugin developers, implementing additional authentication layers such as two-factor authentication, and monitoring for suspicious administrative activities. Network-based protections like web application firewalls can help detect and block malicious CSRF requests, while regular security audits should verify proper implementation of anti-forgery token mechanisms. The vulnerability highlights the importance of maintaining up-to-date security practices and proper input validation in web applications, as emphasized by OWASP Top 10 security recommendations. System administrators should also consider implementing automated patch management systems to ensure timely updates and reduce the window of vulnerability exposure. Regular security training for users regarding phishing threats and suspicious email attachments can further reduce the risk of exploitation, as CSRF attacks often rely on social engineering components to succeed.