CVE-2025-67939: Tickera Auth Bypass Vulnerability

CVE-2025-67939 Overview

CVE-2025-67939 is a Missing Authorization vulnerability (CWE-862) in the Tickera Event Ticketing System plugin for WordPress. This vulnerability allows attackers to exploit incorrectly configured access control security levels, potentially enabling unauthorized access to restricted functionality within the ticketing system.

The vulnerability stems from broken access control mechanisms in the plugin, where authorization checks are missing or improperly implemented. This allows attackers to bypass intended security restrictions and perform actions that should require elevated privileges.

Critical Impact

Unauthorized users may gain access to administrative or restricted functions within the Tickera event ticketing system, potentially compromising ticket sales, event data, and customer information.

Affected Products

• Tickera Event Ticketing System WordPress Plugin versions up to and including 3.5.6.2
• WordPress installations running vulnerable Tickera plugin versions

Discovery Timeline

• 2026-01-22 - CVE-2025-67939 published to NVD
• 2026-01-22 - Last updated in NVD database

Technical Details for CVE-2025-67939

Vulnerability Analysis

This vulnerability is classified as a Missing Authorization issue (CWE-862), which occurs when a web application fails to perform authorization checks to verify whether a user has permission to perform a specific action. In the context of the Tickera plugin, certain functionality that should be restricted to authenticated administrators or specific user roles can be accessed by unauthorized users.

The broken access control vulnerability allows attackers to exploit the incorrectly configured security levels within the plugin. Without proper authorization checks, malicious actors can potentially access, modify, or delete sensitive event and ticketing data that should be protected.

Root Cause

The root cause of this vulnerability lies in missing authorization checks within the Tickera plugin codebase. When handling requests to protected functionality, the plugin fails to verify that the requesting user has the appropriate permissions to perform the requested action. This is a common flaw in WordPress plugins where developers may rely solely on authentication (verifying user identity) without implementing proper authorization (verifying user permissions).

Attack Vector

An attacker can exploit this vulnerability by directly accessing plugin endpoints or functionality that lack proper authorization checks. The attack does not require special tools or advanced techniques—simply crafting HTTP requests to the vulnerable endpoints while authenticated as a low-privilege user (or potentially unauthenticated) can allow access to restricted features.

The vulnerability affects the plugin's access control mechanisms, allowing attackers to bypass security restrictions by exploiting the misconfigured authorization levels. For detailed technical information, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-67939

Indicators of Compromise

• Unexpected modifications to event or ticket data without corresponding admin activity logs
• Access logs showing requests to Tickera plugin endpoints from unauthorized user sessions
• Unusual patterns of API calls or plugin function invocations from non-administrative users
• Reports of ticket or event data inconsistencies that cannot be attributed to legitimate activity

Detection Strategies

• Monitor WordPress access logs for requests to Tickera plugin endpoints from users without administrative roles
• Implement Web Application Firewall (WAF) rules to detect and alert on suspicious access patterns to the ticketing system
• Review user activity logs for privilege escalation attempts or access to restricted plugin features
• Deploy endpoint detection solutions to identify anomalous behavior within the WordPress environment

Monitoring Recommendations

• Enable comprehensive logging for all Tickera plugin actions and user interactions
• Configure alerts for access attempts to administrative Tickera functions by non-admin users
• Regularly audit user permissions and access control configurations within WordPress
• Monitor for unauthorized changes to ticket pricing, event details, or customer data

How to Mitigate CVE-2025-67939

Immediate Actions Required

• Update the Tickera Event Ticketing System plugin to a version newer than 3.5.6.2 when a patched version becomes available
• Review and restrict user roles and capabilities within WordPress to limit exposure
• Implement additional access control measures at the web server or WAF level
• Audit recent activity logs for signs of exploitation

Patch Information

Site administrators should monitor the official Tickera plugin page and the Patchstack Vulnerability Report for updates regarding a security patch. Update to the latest patched version as soon as it becomes available.

Workarounds

• Restrict access to the WordPress admin panel using IP allowlisting
• Implement additional authentication layers for administrative functions
• Use a Web Application Firewall (WAF) to filter malicious requests targeting the plugin
• Consider temporarily disabling the Tickera plugin if it is not essential until a patch is available
• Review and minimize user accounts with access to the ticketing system

# WordPress configuration - restrict admin access by IP (add to .htaccess)
<Files wp-login.php>
    Order Deny,Allow
    Deny from all
    Allow from YOUR_TRUSTED_IP
</Files>