CVE-2024-31942 in Calendarista Basic Edition Plugin
Summary
by MITRE • 04/15/2024
Cross-Site Request Forgery (CSRF) vulnerability in typps Calendarista Basic Edition calendarista-basic-edition.This issue affects Calendarista Basic Edition: from n/a through <= 3.0.2.
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Analysis
by VulDB Data Team • 04/02/2026
The CVE-2024-31942 vulnerability represents a critical cross-site request forgery flaw within the Calendarista Basic Edition plugin for WordPress, specifically impacting versions ranging from the initial release through version 3.0.2. This vulnerability resides in the web application's failure to properly validate and authenticate user requests, creating a significant security risk for affected systems. The flaw allows malicious actors to exploit the lack of proper CSRF protection mechanisms, potentially enabling unauthorized actions to be performed on behalf of authenticated users.
This vulnerability manifests as a failure to implement proper anti-CSRF tokens or validation mechanisms within the plugin's request handling process. The affected Calendarista Basic Edition plugin processes user requests without sufficient verification of the request origin or authenticity, making it susceptible to exploitation through crafted malicious requests. The vulnerability is classified under CWE-352, which specifically addresses Cross-Site Request Forgery issues in web applications. Attackers can leverage this weakness by crafting specially designed requests that appear legitimate to the target system, bypassing normal authentication and authorization controls.
The operational impact of this CSRF vulnerability extends beyond simple data exposure, potentially allowing attackers to perform administrative actions within the calendar plugin's functionality. An attacker could manipulate calendar events, modify user permissions, or even delete calendar entries without proper authorization. The vulnerability affects the integrity and availability of calendar data, potentially leading to data corruption or unauthorized modifications that could disrupt business operations. This issue particularly concerns organizations that rely on calendar management for scheduling, resource allocation, or time-tracking purposes, as unauthorized changes could have significant operational consequences.
The exploitation of this vulnerability aligns with ATT&CK technique T1531, which focuses on 'Modify Existing Service' through the manipulation of web application functionality. Organizations using Calendarista Basic Edition are at risk of unauthorized modifications to their calendar systems, potentially leading to service disruption or data compromise. The vulnerability's impact is amplified by the fact that it affects a widely used WordPress plugin, making it a potential target for automated attacks or mass exploitation campaigns. Security teams should consider this vulnerability as part of their broader application security posture, particularly when assessing third-party plugin security and implementing proper input validation controls.
Mitigation strategies for CVE-2024-31942 should include immediate plugin updates to version 3.0.3 or later, which contains the necessary CSRF protection fixes. Organizations should also implement additional security measures such as web application firewalls, proper input validation, and monitoring for suspicious activity patterns. Regular security assessments of WordPress plugins and themes should be conducted to identify similar vulnerabilities, with particular attention to authentication and authorization mechanisms. The implementation of Content Security Policy headers and proper session management can provide additional layers of protection against similar CSRF attacks. System administrators should also consider implementing network-level protections and access controls to limit the potential impact of any successful exploitation attempts.