CVE-2025-69358: EventPrime Authorization Bypass Vulnerability

CVE-2025-69358 Overview

A Missing Authorization vulnerability has been identified in the Metagauss EventPrime plugin for WordPress (eventprime-event-calendar-management). This vulnerability allows attackers to exploit incorrectly configured access control security levels, potentially leading to unauthorized access to plugin functionality. The flaw stems from insufficient authorization checks (CWE-862), enabling unauthenticated attackers to interact with protected resources or functionality that should require proper authentication.

Critical Impact

Unauthenticated remote attackers can exploit this broken access control vulnerability to cause denial of service conditions, impacting website availability without requiring any user interaction.

Affected Products

• EventPrime (eventprime-event-calendar-management) versions up to and including 4.2.6.0
• WordPress installations running vulnerable EventPrime plugin versions

Discovery Timeline

• 2026-03-25 - CVE-2025-69358 published to NVD
• 2026-03-26 - Last updated in NVD database

Technical Details for CVE-2025-69358

Vulnerability Analysis

This vulnerability is classified as Missing Authorization (CWE-862), a common weakness in web applications where access control checks are not properly implemented. In the context of the EventPrime WordPress plugin, certain functionality lacks appropriate authorization verification, allowing attackers to bypass intended access restrictions.

The vulnerability is exploitable over the network without requiring authentication or user interaction. When successfully exploited, the flaw primarily impacts system availability, potentially causing denial of service conditions on affected WordPress installations. While confidentiality and integrity are not directly compromised according to the vulnerability assessment, the availability impact is significant.

Root Cause

The root cause of this vulnerability lies in the EventPrime plugin's failure to implement proper authorization checks before executing certain privileged operations. WordPress plugins are expected to verify user capabilities using functions like current_user_can() before performing sensitive actions. The EventPrime plugin omits these critical checks in affected code paths, allowing any visitor to trigger functionality that should be restricted to authenticated administrators or specific user roles.

Attack Vector

The attack can be executed remotely over the network by sending crafted HTTP requests to the vulnerable WordPress endpoint. Since no authentication is required, an attacker simply needs to identify a WordPress site running a vulnerable version of EventPrime and send malicious requests directly. The low attack complexity means that exploitation does not require specialized knowledge or sophisticated tooling—basic HTTP request manipulation is sufficient.

The vulnerability enables exploitation of incorrectly configured access control security levels, meaning attackers can access administrative or restricted functionality by directly calling endpoints that lack proper permission validation.

Detection Methods for CVE-2025-69358

Indicators of Compromise

• Unusual HTTP requests to EventPrime plugin endpoints from unauthenticated sources
• Unexpected spikes in requests to WordPress AJAX handlers associated with the EventPrime plugin
• Server resource exhaustion or performance degradation coinciding with requests to EventPrime endpoints
• Web server logs showing repeated access to EventPrime API endpoints without corresponding authentication events

Detection Strategies

• Monitor WordPress access logs for requests to /wp-admin/admin-ajax.php with EventPrime-related action parameters from unauthenticated sessions
• Implement Web Application Firewall (WAF) rules to detect and block suspicious patterns targeting the EventPrime plugin
• Enable WordPress audit logging to track unauthorized access attempts to plugin functionality
• Use SentinelOne Singularity to detect anomalous behavior patterns on web servers hosting vulnerable WordPress installations

Monitoring Recommendations

• Configure alerting for abnormal request volumes to WordPress plugin endpoints
• Implement rate limiting on WordPress AJAX endpoints to mitigate potential DoS exploitation
• Monitor server resource utilization (CPU, memory) for signs of denial of service attacks
• Review WordPress security logs regularly for failed authorization events related to EventPrime

How to Mitigate CVE-2025-69358

Immediate Actions Required

• Update the EventPrime plugin to a version newer than 4.2.6.0 once a patched version is available
• Temporarily disable the EventPrime plugin if it is not critical to site operations until a patch is released
• Implement WAF rules to restrict access to EventPrime-specific endpoints
• Review WordPress user roles and capabilities to ensure proper access control configuration
• Enable WordPress security hardening measures including limiting AJAX access where possible

Patch Information

The vulnerability affects EventPrime versions through 4.2.6.0. Website administrators should monitor the Patchstack Vulnerability Report for updates on patch availability. Apply the latest security update from Metagauss as soon as it becomes available through the WordPress plugin repository.

Workarounds

• Restrict access to WordPress administrative endpoints at the web server level using IP allowlisting
• Implement a Web Application Firewall with rules specifically targeting broken access control attempts
• Use WordPress security plugins to add additional authorization layers to AJAX requests
• Consider implementing HTTP authentication as an additional layer for administrative areas
• Disable the EventPrime plugin temporarily if event calendar functionality is not immediately required

# Apache .htaccess example to restrict AJAX access (temporary workaround)
# Add to WordPress root .htaccess file
<Files admin-ajax.php>
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    Allow from 10.0.0.0/8
</Files>