Description

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.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "5.3",
  "pubDate": "2026-10-05T12:17:07.670Z",
  "pubdate": "2026-10-05T12:17:07.670Z",
  "executiveSummary": "The WP Event Solution plugin for WordPress, versions ranging from n/a through 4.1.25, contains a critical Missing Authorization vulnerability.\nThis security flaw stems from improperly configured access control security levels, allowing unauthorized users to perform actions restricted to higher-privileged roles.\nThe vulnerability exposes the application to unauthorized manipulation, potentially leading to unauthorized data access, modification of event settings, or administrative actions depending on the specific endpoint exposed.\nThe vulnerability allows an unauthenticated or low-privileged attacker to bypass intended security boundaries, effectively escalating their capability to interact with sensitive plugin functionalities without requisite authorization checks.\nThe risk is significant as it permits unauthorized actors to interact with backend functionalities that should be shielded by robust access control mechanisms, undermining the integrity and confidentiality of the WordPress site's event management system.\nNo specific user interaction is required for a remote, unauthenticated attacker to exploit this issue, making it a high-priority security concern for site administrators.",
  "technicalDetails": "The root cause of this vulnerability is the failure of the WP Event Solution plugin to consistently implement proper authorization checks on critical backend endpoints. Specifically, the plugin's architectural design fails to validate the current user's session privileges or capability checks before executing sensitive operations.\nIn the context of the WordPress security model, developers are expected to utilize functions like current_user_can() within the execution flow of functions handling AJAX requests or REST API endpoints to enforce the principle of least privilege. In the affected versions of WP Event Solution, these checks are either entirely omitted or improperly implemented on functions exposed to external input, allowing unauthorized requests to proceed to the functional logic.\nThe attack flow involves an attacker sending specially crafted HTTP requests targeting the vulnerable endpoints. Because the plugin does not verify the requester's authorization level, the request is processed by the server as if it were a legitimate, authorized call. This behavior effectively bypasses the server-side access controls, enabling unauthorized manipulation of plugin state or configurations.\nThe vulnerability is primarily located within the plugin's request handling components, which appear to lack the mandatory security context verification necessary for administrative or privileged actions. The exploitation does not require advanced techniques; it is a straightforward failure of access control enforcement.\nUpon successful exploitation, an attacker can achieve post-exploitation impacts commensurate with the functionality of the compromised endpoint. This could include modifying event data, manipulating plugin settings, or potentially executing other administrative tasks intended only for privileged users (e.g., administrators or event managers). The lack of input validation combined with the missing authorization creates a significant attack vector that facilitates unauthorized interactions with the plugin's data and configuration layer.\nThe exposure is network-based, as the affected endpoints are accessible to anyone with network connectivity to the target WordPress installation, and the lack of authentication requirements enables immediate, unauthenticated exploitation."
}