CVE-2025-66071 in Custom Order Numbers for WooCommerce Plugin
Summary
by MITRE • 11/21/2025
Missing Authorization vulnerability in tychesoftwares Custom Order Numbers for WooCommerce custom-order-numbers-for-woocommerce allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Custom Order Numbers for WooCommerce: from n/a through <= 1.11.0.
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Analysis
by VulDB Data Team • 11/22/2025
The vulnerability identified as CVE-2025-66071 represents a critical missing authorization flaw within the Custom Order Numbers for WooCommerce plugin, specifically impacting versions ranging from the initial release through version 1.11.0. This security weakness stems from incorrectly configured access control mechanisms that fail to properly validate user permissions before granting access to sensitive administrative functions. The issue manifests when the plugin does not adequately verify whether a user possesses the necessary privileges to perform certain operations, creating a pathway for unauthorized individuals to exploit the system.
The technical implementation of this vulnerability resides in the plugin's insufficient authorization checks within its order number generation and management functionalities. When users interact with the custom order number system, the application fails to properly authenticate and authorize each request against the user's role and permissions. This misconfiguration allows attackers to bypass standard access controls that should restrict order number modifications to authorized administrators or specific user roles. The flaw operates at the application logic level, where the plugin assumes that certain operations can be performed without proper verification of the executing user's credentials and privileges, directly correlating to CWE-285 which addresses improper authorization within software systems.
The operational impact of this vulnerability extends significantly within e-commerce environments where WooCommerce stores process sensitive customer transactions and order data. An attacker exploiting this missing authorization flaw could potentially manipulate order numbers, access confidential order information, or disrupt the normal flow of order processing. This vulnerability particularly affects businesses relying on custom order number generation for inventory tracking, customer service reference, or compliance purposes. The consequences include potential data leakage, unauthorized modification of order records, and disruption of business operations that depend on accurate order numbering systems. Attackers could leverage this weakness to gain insights into order volumes, customer purchasing patterns, or even to create fraudulent order entries that could compromise the integrity of the entire order management system.
Security professionals should consider this vulnerability in the context of the ATT&CK framework, specifically under the privilege escalation and defense evasion categories. The misconfigured access controls create opportunities for attackers to move laterally within the system and potentially escalate their privileges to gain administrative access. Mitigation strategies should include immediate plugin updates to versions that address the authorization flaw, implementation of network-level access controls to restrict direct plugin access, and thorough review of user permissions within the WordPress administration panel. Additionally, organizations should conduct comprehensive security audits of all installed plugins to identify similar misconfigurations and implement proper input validation and access control mechanisms. The vulnerability underscores the importance of implementing defense-in-depth strategies where multiple layers of security controls work together to prevent unauthorized access to sensitive system functions, particularly in e-commerce environments where financial data and customer information are at risk.