CVE-2024-1123 in EventPrime Plugin
Summary
by MITRE • 03/09/2024
The EventPrime – Events Calendar, Bookings and Tickets plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_frontend_event_submission() function in all versions up to, and including, 3.4.2. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the title and content of arbitrary posts. This can also be exploited by unauthenticated attackers when the allow_submission_by_anonymous_user setting is enabled.
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Analysis
by VulDB Data Team • 04/12/2026
The EventPrime WordPress plugin presents a critical authorization vulnerability that undermines the security of event management functionalities across numerous websites. This vulnerability stems from an insufficient capability validation mechanism within the save_frontend_event_submission() function, which operates without proper access controls to verify user permissions before allowing data modification operations. The flaw affects all plugin versions up to and including 3.4.2, creating a persistent risk for WordPress installations that rely on this calendar and booking solution for event management and ticketing operations.
The technical implementation of this vulnerability resides in the frontend event submission handler where the plugin fails to validate whether the requesting user possesses adequate privileges to modify specific posts. This missing capability check creates a direct pathway for unauthorized data manipulation, allowing attackers to overwrite title and content fields of arbitrary posts within the WordPress environment. The vulnerability operates at the application layer and specifically targets the WordPress post management system through the plugin's event submission interface, making it particularly dangerous as it leverages legitimate plugin functionality to execute malicious data modification attempts.
The operational impact of this vulnerability extends beyond simple data corruption, as it provides attackers with the ability to manipulate event content and potentially compromise the integrity of the entire event management system. Authenticated attackers with subscriber-level privileges or higher can exploit this weakness to modify any post content, while unauthenticated attackers gain additional leverage when the allow_submission_by_anonymous_user setting is enabled. This dual attack vector significantly increases the exploitability of the vulnerability across different threat scenarios, from insider threats to external attacks that may have gained limited access through other means. The vulnerability aligns with CWE-863, which addresses "Incorrect Authorization" issues where the system fails to properly verify user permissions before granting access to protected resources.
The security implications of this vulnerability can be further understood through the ATT&CK framework's privilege escalation and data manipulation tactics. Attackers can leverage this weakness to perform post-exploitation activities including content injection, data poisoning, and potential information disclosure through manipulated event data. The vulnerability also represents a significant risk to website reputation and user trust, as attackers could modify event details to spread misinformation or conduct social engineering campaigns. Organizations using this plugin face potential regulatory compliance issues if event data integrity is compromised, particularly in environments where event information must remain accurate and tamper-proof.
Mitigation strategies should prioritize immediate plugin version updates to the latest secure release, as this vulnerability has been addressed in subsequent versions. Organizations should also implement additional access controls through custom user roles that limit frontend submission capabilities to trusted users only. Network-level restrictions and monitoring of event submission endpoints can provide additional layers of defense against exploitation attempts. Regular security audits of WordPress plugins and core systems should include verification of capability checks and authorization mechanisms to prevent similar vulnerabilities from emerging in other components. The vulnerability demonstrates the critical importance of proper input validation and capability verification in web applications, particularly those handling user-generated content and event management functionalities.