CVE-2024-9864 in EventPrime Plugin
Summary
by MITRE • 10/24/2024
The EventPrime – Events Calendar, Bookings and Tickets plugin for WordPress is vulnerable to Stored Cross-Site Scripting via ticket names in all versions up to, and including, 4.0.4.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable when front-end users can submit new events with tickets.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 03/03/2025
The vulnerability identified as CVE-2024-9864 affects the EventPrime plugin for WordPress, specifically targeting versions up to and including 4.0.4.7. This represents a critical security flaw that enables stored cross-site scripting attacks through ticket name inputs. The vulnerability stems from inadequate input sanitization and output escaping mechanisms within the plugin's codebase, creating a persistent security risk that can be exploited by unauthenticated attackers without requiring any privileged access or user interaction beyond submitting event data. The affected plugin serves as an events calendar, bookings, and tickets management system, making it particularly concerning given the volume of user-generated content it processes and the potential for widespread impact across WordPress installations.
The technical implementation of this vulnerability occurs when front-end users submit event information containing ticket names that include malicious script code. The plugin fails to properly sanitize or escape user input before storing it in the database, allowing attackers to inject persistent JavaScript payloads that remain stored within the system. When other users access pages containing these maliciously crafted ticket names, the stored scripts execute in their browsers, potentially leading to session hijacking, credential theft, or redirection to malicious websites. This stored XSS vulnerability operates through the standard web application attack vector where malicious input is rendered in web pages without proper sanitization, creating a persistent threat that affects all users who view the compromised content.
The operational impact of this vulnerability extends beyond simple script execution, as it can be leveraged for sophisticated attacks targeting WordPress administrators and regular users. Attackers can craft malicious ticket names that, when viewed by administrators, could execute scripts to steal admin credentials, modify event data, or install backdoors within the WordPress environment. The vulnerability's exploitation requires only that front-end users can submit events with tickets, which in many WordPress installations is a feature available to registered users or even unauthenticated visitors depending on plugin configuration. This makes the attack surface particularly wide and increases the likelihood of successful exploitation in real-world scenarios where WordPress sites may not properly restrict user submission capabilities.
Organizations affected by this vulnerability should immediately update to the latest version of the EventPrime plugin where the XSS vulnerability has been addressed through proper input sanitization and output escaping mechanisms. The mitigation strategy should include implementing proper content security policies to limit script execution within the WordPress environment, regularly monitoring user submissions for malicious content, and conducting security audits of all WordPress plugins to ensure they meet current security standards. Additionally, administrators should consider implementing web application firewalls and monitoring systems that can detect and block suspicious input patterns that may indicate attempts to exploit this vulnerability. This remediation aligns with industry best practices for XSS prevention as outlined in CWE-79 and follows the ATT&CK framework's methodology for web application exploitation techniques, emphasizing the importance of proper input validation and output encoding in preventing persistent cross-site scripting attacks.
The vulnerability demonstrates the critical importance of input validation and output escaping in web application security, particularly within content management systems where user-generated content is prevalent. It highlights how seemingly minor security oversights in plugin development can create significant risks for entire WordPress installations, as the EventPrime plugin's functionality requires handling user-submitted data that must be properly sanitized to prevent malicious code injection. Organizations should adopt a proactive security approach that includes regular security assessments of all installed plugins, implementation of security monitoring solutions, and adherence to security standards that prevent the execution of untrusted code within web applications. The vulnerability also underscores the need for security-conscious development practices that follow established security frameworks and maintain up-to-date security measures to protect against evolving threats in the WordPress ecosystem.