CVE-2025-52731: WordPress Eventin Pro Auth Bypass Flaw

CVE-2025-52731 Overview

CVE-2025-52731 is a Missing Authorization vulnerability (CWE-862) affecting the WordPress Event Manager, Event Calendar and Booking Plugin (eventin-pro) developed by themefunction. This vulnerability allows attackers to exploit incorrectly configured access control security levels, potentially leading to arbitrary content deletion. The flaw exists due to improper authorization checks within the plugin, enabling unauthorized users to perform actions that should be restricted to privileged users only.

Critical Impact

Attackers can exploit this missing authorization vulnerability to delete arbitrary content on affected WordPress sites, potentially causing data loss and service disruption.

Affected Products

• WordPress Event Manager, Event Calendar and Booking Plugin (eventin-pro) versions through 4.0.24

Discovery Timeline

• 2025-08-14 - CVE CVE-2025-52731 published to NVD
• 2026-04-01 - Last updated in NVD database

Technical Details for CVE-2025-52731

Vulnerability Analysis

This vulnerability stems from a missing authorization check within the eventin-pro WordPress plugin. The plugin fails to properly verify user permissions before executing sensitive operations, specifically content deletion functionality. When authorization checks are absent, any authenticated user—regardless of their role or privilege level—can invoke functions that should be restricted to administrators or other privileged roles. This represents a classic Broken Access Control weakness where the application does not enforce proper access control policies.

The vulnerability enables unauthorized content deletion, which could be leveraged by a low-privileged attacker (such as a subscriber or contributor) to delete events, calendar entries, bookings, or other content managed by the plugin.

Root Cause

The root cause is the absence of capability checks (current_user_can()) or nonce verification before executing privileged operations within the plugin's codebase. WordPress plugins must explicitly verify that the current user has the appropriate permissions before performing any sensitive actions. The eventin-pro plugin versions through 4.0.24 fail to implement these authorization checks on certain endpoints or AJAX handlers, allowing any authenticated user to trigger content deletion.

Attack Vector

The attack vector for this vulnerability involves an authenticated user with minimal privileges (such as a WordPress subscriber account) sending crafted requests to the vulnerable plugin endpoints. Since no authorization check is performed, the plugin processes the request and executes the content deletion operation regardless of the user's actual role.

The exploitation process typically involves:

1. Attacker obtains or creates a low-privileged account on the target WordPress site
2. Attacker identifies the vulnerable endpoint or AJAX action within the eventin-pro plugin
3. Attacker crafts a request to delete arbitrary content (events, bookings, etc.)
4. The plugin processes the request without verifying user capabilities
5. Target content is deleted, causing data loss

For detailed technical information about this vulnerability, refer to the Patchstack WordPress Vulnerability Report.

Detection Methods for CVE-2025-52731

Indicators of Compromise

• Unexpected deletion of events, calendar entries, or booking records
• WordPress audit logs showing content deletion by unauthorized or low-privileged users
• Unusual POST requests to eventin-pro plugin endpoints from subscriber-level accounts
• Database entries showing content modifications without corresponding administrative actions

Detection Strategies

• Monitor WordPress activity logs for deletion operations performed by non-admin users
• Implement Web Application Firewall (WAF) rules to detect suspicious requests targeting eventin-pro plugin endpoints
• Review server access logs for unusual patterns of requests to /wp-admin/admin-ajax.php with eventin-pro related action parameters
• Deploy file integrity monitoring to detect unexpected changes to plugin files

Monitoring Recommendations

• Enable and regularly review WordPress security audit logs
• Configure alerts for content deletion events triggered by accounts without administrator privileges
• Implement real-time monitoring of AJAX requests to WordPress sites running vulnerable plugin versions
• Utilize SentinelOne's WordPress security monitoring capabilities to detect unauthorized access attempts

How to Mitigate CVE-2025-52731

Immediate Actions Required

• Update the eventin-pro plugin to a patched version above 4.0.24 if available
• Restrict subscriber and contributor account registrations until the plugin is updated
• Review WordPress user accounts for unauthorized or suspicious registrations
• Implement additional access control layers through a WordPress security plugin
• Create backups of all event, calendar, and booking data immediately

Patch Information

Organizations should update the WordPress Event Manager, Event Calendar and Booking Plugin (eventin-pro) to the latest available version. Check the plugin's official changelog or the Patchstack security advisory for information on patched versions. If no patch is currently available, implement the workarounds below until an official fix is released.

Workarounds

• Temporarily disable the eventin-pro plugin if it's not critical to site operations
• Restrict user registration on the WordPress site to prevent unauthorized account creation
• Implement server-level access controls to limit requests to plugin endpoints
• Use a WordPress security plugin to add additional authorization layers
• Configure .htaccess rules to restrict access to sensitive plugin endpoints to administrator IP addresses only

# WordPress .htaccess restriction example for admin-ajax.php
# Add IP-based restrictions for AJAX actions (adjust IP as needed)
<Files admin-ajax.php>
    <RequireAny>
        Require ip 192.168.1.0/24
        Require ip 10.0.0.0/8
    </RequireAny>
</Files>