CVE-2026-109898 in WP Event Solution Plugin
Summary
by MITRE • 10/13/2026
Missing Authorization vulnerability in Arraytics WP Event Solution wp-event-solution allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WP Event Solution: from n/a through 4.1.25.
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Analysis
by VulDB Data Team • 10/13/2026
The identified security flaw within the Arraytics WP Event Solution plugin, specifically versions ranging from initial releases up to version 4.1.25, represents a critical failure in access control mechanisms known as Missing Authorization or Broken Access Control. This vulnerability stems from an incorrect configuration of security levels that governs how users interact with specific administrative functions and data resources within the WordPress environment. In standard web application architecture, authorization checks are designed to verify whether a user has the necessary permissions to perform a requested action on a given resource. However, in this instance, the plugin fails to adequately enforce these restrictions, allowing unauthenticated or low-privilege users to execute actions that should be restricted to administrators or other high-level roles. This misconfiguration effectively bypasses the intended security boundaries established by the WordPress core and the plugin's own design logic.
From a technical perspective, this vulnerability allows attackers to exploit the lack of proper server-side validation for user capabilities. When an HTTP request is made to interact with sensitive endpoints managed by the WP Event Solution plugin, the application does not sufficiently verify that the requesting session possesses valid administrative privileges or specific capability tokens required for such operations. Consequently, any actor who can access the WordPress installation, including those without a registered account if public-facing functions are exposed, may be able to manipulate event data, modify settings, or potentially escalate their privileges within the system. This type of flaw is particularly dangerous because it undermines the fundamental principle of least privilege, enabling actions that could lead to significant compromise of the website's integrity and confidentiality.
The operational impact of this vulnerability is severe for organizations relying on WordPress for event management. An attacker can exploit this missing authorization to alter or delete critical event information, inject malicious content into public-facing pages through administrative interfaces, or extract sensitive user data stored within the plugin's database tables. Furthermore, if the compromised account has broader access rights across the WordPress installation, the attacker could leverage these elevated privileges to install additional malware, deface the website, or use it as a pivot point for further attacks against internal networks. The ability to manipulate administrative functions without proper authentication also facilitates automated scanning and exploitation campaigns, increasing the risk of widespread compromise among sites running vulnerable versions of this plugin.
This vulnerability aligns with CWE-284, which describes Improper Access Control, specifically highlighting failures in enforcing restrictions on actions performed by users. It is closely related to CVE patterns involving insecure direct object references or broken access control where the application relies solely on client-side checks or fails to validate session tokens and capability flags server-side. In terms of threat modeling, this behavior corresponds to techniques found in the MITRE ATT&CK framework under Initial Access and Privilege Escalation tactics, particularly those involving exploitation of misconfigured permissions. Attackers often utilize automated tools to probe for such weaknesses by sending crafted requests that attempt to access restricted endpoints directly via URL manipulation or parameter tampering, bypassing standard user interface constraints.
To mitigate this risk, immediate action is required to update the WP Event Solution plugin to a version later than 4.1.25 where these authorization checks have been corrected and hardened. Administrators should verify that their WordPress installation includes all latest security patches for core components as well. In environments where updating is not immediately feasible, temporary mitigations include restricting access to the wp-admin directory using IP whitelisting or two-factor authentication mechanisms to reduce the attack surface available to unauthorized actors. Additionally, implementing a Web Application Firewall can help detect and block requests that exhibit patterns consistent with exploitation attempts against broken access control vulnerabilities. Regular security audits and penetration testing should be conducted to identify similar misconfigurations in other plugins and custom code within the WordPress ecosystem, ensuring robust enforcement of authorization policies across all application layers.