CVE-2026-25415: WPBookit Pro Auth Bypass Vulnerability

CVE-2026-25415 Overview

A Missing Authorization vulnerability has been identified in the iqonicdesign WPBookit Pro WordPress plugin (wpbookit-pro). This broken access control flaw allows attackers to exploit incorrectly configured access control security levels, potentially enabling unauthorized actions within the application. The vulnerability stems from CWE-862 (Missing Authorization), where the plugin fails to properly verify user permissions before processing certain requests.

Critical Impact

Unauthenticated attackers can bypass authorization controls to perform unauthorized actions, potentially modifying booking data or plugin settings without proper credentials.

Affected Products

• WPBookit Pro plugin versions through 1.6.18
• WordPress installations with WPBookit Pro installed
• Sites using WPBookit Pro for booking functionality

Discovery Timeline

• 2026-02-19 - CVE CVE-2026-25415 published to NVD
• 2026-02-19 - Last updated in NVD database

Technical Details for CVE-2026-25415

Vulnerability Analysis

This vulnerability is classified as a Missing Authorization issue (CWE-862), a common weakness in WordPress plugins where critical functionality lacks proper permission checks. The WPBookit Pro plugin fails to implement adequate authorization controls on one or more endpoints, allowing unauthenticated or low-privileged users to access functionality that should be restricted.

The vulnerability is exploitable over the network without requiring authentication or user interaction. While the confidentiality impact is limited, the integrity of the system can be compromised, allowing attackers to make unauthorized modifications.

Root Cause

The root cause of this vulnerability lies in the plugin's failure to implement proper authorization checks before executing sensitive operations. WordPress provides capability-checking functions like current_user_can() that should be used to verify user permissions, but these checks are either missing or improperly implemented in the affected code paths. This allows requests to be processed without validating whether the user has the appropriate privileges to perform the requested action.

Attack Vector

The attack vector for CVE-2026-25415 is network-based and requires no authentication. An attacker can send crafted HTTP requests directly to vulnerable endpoints exposed by the WPBookit Pro plugin. Since no user interaction is required, exploitation can be automated and performed at scale against vulnerable WordPress installations.

The attack flow typically involves:

1. Identifying a WordPress site with WPBookit Pro installed
2. Locating the vulnerable endpoint lacking authorization checks
3. Sending malicious requests to manipulate booking data or plugin settings
4. Exploiting the broken access control to perform unauthorized actions

For technical details on this vulnerability, refer to the Patchstack WPBookit Pro Vulnerability advisory.

Detection Methods for CVE-2026-25415

Indicators of Compromise

• Unexpected modifications to booking records or plugin settings without corresponding admin activity
• Unusual HTTP requests to WPBookit Pro AJAX endpoints from unauthenticated sources
• Web server logs showing requests to /wp-admin/admin-ajax.php with WPBookit Pro action parameters from suspicious IPs
• Changes to booking configurations that administrators did not initiate

Detection Strategies

• Monitor WordPress AJAX endpoints for requests to WPBookit Pro actions without proper authentication cookies
• Implement Web Application Firewall (WAF) rules to detect and block unauthorized access attempts to booking endpoints
• Review access logs for patterns indicating automated scanning or exploitation attempts targeting the plugin
• Use WordPress security plugins to alert on unauthorized changes to plugin settings

Monitoring Recommendations

• Enable detailed logging for all WPBookit Pro plugin actions and audit these logs regularly
• Configure alerts for any modifications to booking data occurring outside normal business hours
• Monitor for multiple failed authorization attempts followed by successful actions from the same IP
• Implement real-time alerting for changes to critical plugin configurations

How to Mitigate CVE-2026-25415

Immediate Actions Required

• Update WPBookit Pro to a patched version as soon as one becomes available from the vendor
• Temporarily disable the WPBookit Pro plugin if immediate patching is not possible and the functionality is not critical
• Implement WAF rules to restrict access to WPBookit Pro AJAX endpoints
• Review recent booking and plugin setting changes for signs of unauthorized modifications
• Restrict WordPress admin panel access to trusted IP addresses

Patch Information

The vulnerability affects WPBookit Pro versions through 1.6.18. Users should monitor the Patchstack advisory for updates on patched versions. Contact iqonicdesign for information on security updates and apply the latest available version once released.

Workarounds

• Implement IP-based access restrictions on WordPress AJAX endpoints using .htaccess or server configuration
• Use a WordPress security plugin to add capability checks at the application level
• Deploy a Web Application Firewall (WAF) with rules specifically blocking unauthorized requests to booking endpoints
• Temporarily restrict plugin functionality to authenticated administrators only until a patch is available

# Example .htaccess rule to restrict admin-ajax.php access
<Files admin-ajax.php>
    <RequireAll>
        Require all granted
        # Add specific IP restrictions as needed
        # Require ip 192.168.1.0/24
    </RequireAll>
</Files>