CVE-2026-32583 Scanner

Webnus Inc. Modern Events Calendar is a popular plugin for WordPress, widely used by event organizers to create, manage, and promote events on their websites. Developed by Webnus, a renowned company in the WordPress development space, this tool provides users with comprehensive capabilities for handling various types of events. Its primary function is to aid organizations in displaying event information in a clear and interactive format, attracting attendees and participants. Featuring multiple advanced event management features, Modern Events Calendar is suitable for both small businesses and large organizations. Users appreciate its seamless integration with existing WordPress environments and the flexibility it offers through a range of customization options. The plugin continually updates to adapt to new user requirements and security enhancements.

The vulnerability in question is a Broken Access Control flaw within the Modern Events Calendar plugin by Webnus Inc. This arises from incorrectly configured access control mechanisms, permitting unauthorized users to bypass security protocols. Such vulnerabilities can significantly degrade the integrity and security of the system. In this context, it allows attackers to access areas and functionalities meant to be restricted, potentially leading to unauthorized data exposure or manipulation. Broken Access Control vulnerabilities are considered critical because they directly impact the trustworthiness of web applications. Addressing this vulnerability is imperative to maintain the confidentiality and security of sensitive information.

Technically, the vulnerability is exploited by sending unauthorized POST requests to the `/wp-admin/admin-ajax.php` endpoint, which does not properly enforce access checks. This action parameter `mec_speaker_adding` can be manipulated by attackers to perform actions reserved for authenticated users. The conditions enabling this vulnerability stem from the way permission and access controls are configured, missing crucial validation steps that should limit access to certain user roles. The flaw lies in the system's failure to verify authorization, allowing any user with knowledge of the endpoint to potentially manipulate data. This technical detail highlights the importance of implementing secure access control mechanisms.

If exploited, this vulnerability could allow attackers to perform unauthorized actions such as modifying event data or accessing restricted sections of the WordPress site. The subsequent unauthorized actions could compromise the confidentiality, integrity, or availability of the data managed by the plugin. In severe cases, this could lead to a loss of user trust, data breaches, or even financial loss if sensitive information is altered or stolen. Such scenarios highlight the importance of immediate vulnerability mitigation to protect against potential exploits. Fixing Broken Access Control vulnerabilities is crucial for maintaining system security and user confidence.

REFERENCES

• https://nvd.nist.gov/vuln/detail/CVE-2026-32583