CVE-2026-24567: Anything Order by Terms Auth Bypass Flaw

CVE-2026-24567 Overview

CVE-2026-24567 is a Missing Authorization vulnerability affecting the "Anything Order by Terms" WordPress plugin developed by briarinc. This security flaw allows attackers to exploit incorrectly configured access control security levels, potentially leading to unauthorized access to protected functionality. The vulnerability stems from the plugin's failure to properly verify user permissions before processing certain requests.

Critical Impact

Authenticated attackers with low-privilege accounts can bypass authorization checks and access restricted plugin functionality, potentially exposing sensitive term ordering configurations and site data.

Affected Products

• Anything Order by Terms WordPress Plugin version 1.4.0 and earlier
• All WordPress installations running vulnerable versions of the anything-order-by-terms plugin

Discovery Timeline

• 2026-01-23 - CVE-2026-24567 published to NVD
• 2026-01-26 - Last updated in NVD database

Technical Details for CVE-2026-24567

Vulnerability Analysis

This vulnerability is classified as CWE-862 (Missing Authorization), a configuration and design flaw where the application fails to perform proper authorization checks before granting access to protected resources or functionality. In the context of the Anything Order by Terms plugin, the issue allows authenticated users with minimal privileges to access administrative functions that should be restricted to higher-privileged users.

The attack requires network access and authenticated user credentials (even subscriber-level access). While the attack complexity is low and requires no user interaction, the impact is limited to information disclosure without affecting integrity or availability of the system.

Root Cause

The root cause of this vulnerability lies in the plugin's inadequate implementation of WordPress capability checks. The plugin fails to verify that the current user has appropriate administrative permissions before processing requests that modify or access term ordering configurations. This represents a classic Broken Access Control vulnerability where authentication is present but authorization is missing.

Attack Vector

The vulnerability is exploitable over the network by any authenticated WordPress user. An attacker with a low-privilege account (such as subscriber or contributor role) can directly access plugin endpoints or AJAX handlers that should be restricted to administrators. The attack does not require any user interaction from victims.

The exploitation flow typically involves:

1. Authenticating to WordPress with any valid user account
2. Identifying unprotected plugin endpoints or AJAX actions
3. Sending crafted requests to access restricted term ordering functionality
4. Retrieving configuration data or manipulating term order settings

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

Detection Methods for CVE-2026-24567

Indicators of Compromise

• Unusual access patterns to plugin-specific AJAX handlers from low-privilege user accounts
• Unexpected modifications to term ordering configurations
• Access logs showing authenticated users accessing administrative plugin endpoints without proper roles
• Multiple requests to anything-order-by-terms related endpoints from non-administrator accounts

Detection Strategies

• Monitor WordPress AJAX request logs for calls to plugin-specific actions from non-administrator users
• Implement logging for all plugin configuration changes and review for unauthorized modifications
• Deploy web application firewall (WAF) rules to detect authorization bypass attempts
• Review user activity logs for subscribers or contributors accessing admin-only functionality

Monitoring Recommendations

• Enable detailed WordPress audit logging to track user actions and plugin interactions
• Configure alerts for any term ordering changes made by non-administrator users
• Regularly review access logs for patterns indicating authorization bypass attempts
• Implement real-time monitoring of WordPress AJAX endpoints for suspicious activity

How to Mitigate CVE-2026-24567

Immediate Actions Required

• Identify all WordPress installations using the Anything Order by Terms plugin version 1.4.0 or earlier
• Consider temporarily deactivating the plugin until a patched version is available
• Review user accounts and remove unnecessary low-privilege accounts that could be used for exploitation
• Implement additional access controls at the web server or WAF level to restrict plugin endpoint access

Patch Information

At the time of CVE publication, users should monitor the WordPress plugin repository and the Patchstack security advisory for updates from the plugin developer. Update to a patched version immediately when available.

Workarounds

• Temporarily disable the Anything Order by Terms plugin if it is not critical to site functionality
• Restrict WordPress user registration to prevent unauthorized account creation
• Implement server-level access controls to limit plugin endpoint access to administrator IP addresses
• Use a WordPress security plugin to add additional capability checks on AJAX handlers

# WordPress configuration to restrict user registration
# Add to wp-config.php to disable user registration if not needed
define('DISALLOW_FILE_EDIT', true);

# Review and audit current plugin users with WP-CLI
wp user list --role=subscriber --format=table
wp user list --role=contributor --format=table