CVE-2023-3126 in B2BKing Plugin
Summary
by MITRE • 06/07/2023
The B2BKing plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the 'b2bkingdownloadpricelist' function in versions up to, and including, 4.6.00. This makes it possible for Authenticated attackers with subscriber or customer-level permissions to retrieve the full pricing list of all products on the site.
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Analysis
by VulDB Data Team • 04/09/2026
The vulnerability identified as CVE-2023-3126 affects the B2BKing plugin for WordPress, a widely used e-commerce solution that enables businesses to implement B2B pricing structures and customer management features. This particular flaw resides in the plugin's handling of the 'b2bkingdownloadpricelist' function, which is designed to facilitate the download of comprehensive pricing information for products within the WooCommerce environment. The vulnerability represents a critical access control issue that undermines the security model of the plugin by failing to properly validate user permissions before executing sensitive data retrieval operations.
The technical flaw stems from a missing capability check within the plugin's codebase, specifically in version 4.6.00 and earlier releases. This oversight allows authenticated users who possess only subscriber or customer-level permissions to exploit the functionality and gain unauthorized access to the complete product pricing list. The vulnerability operates under CWE-284 which categorizes improper access control issues, where the system fails to properly enforce authorization checks for sensitive operations. The flaw essentially creates a backdoor mechanism that bypasses the intended permission hierarchy, enabling lower-privileged users to access data that should only be available to administrators or users with explicit B2B pricing management permissions.
From an operational impact perspective, this vulnerability presents significant risks to businesses utilizing the B2BKing plugin, particularly those operating in competitive markets where pricing information represents valuable intellectual property. An attacker with subscriber-level access could potentially download comprehensive pricing lists containing wholesale pricing structures, promotional discounts, and product cost information that competitors could leverage for strategic advantage. The exposure extends beyond simple information disclosure to include potential business disruption, as competitors might use the pricing data to undercut legitimate pricing strategies or identify vulnerable market positions. This vulnerability directly aligns with ATT&CK technique T1213.002 which involves data from information repositories, specifically targeting the extraction of sensitive business data through unauthorized access methods.
The security implications of this vulnerability extend to the broader WordPress ecosystem and highlight the critical importance of proper capability validation in plugin development. Organizations using the B2BKing plugin must immediately implement mitigation strategies including updating to the patched version, reviewing user permissions, and implementing additional access controls. System administrators should conduct thorough audits of user roles and capabilities to ensure that only authorized personnel have access to B2B pricing functions. The vulnerability demonstrates the necessity of comprehensive security testing during plugin development cycles and underscores the importance of following secure coding practices that enforce proper authorization checks before executing sensitive operations. Organizations should also consider implementing network-level monitoring to detect unusual data access patterns that might indicate exploitation attempts of this vulnerability.