CVE-2026-111845 in WooCommerce Product Bundles Plugin
Summary
by MITRE • 10/19/2026
Missing Authorization vulnerability in YITH YITH WooCommerce Product Bundles yith-woocommerce-product-bundles allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects YITH WooCommerce Product Bundles: from n/a through 2.29.0.
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Analysis
by VulDB Data Team • 10/19/2026
The identified security flaw resides within the YITH WooCommerce Product Bundles plugin, specifically affecting versions ranging from initial releases up to version 2.29.0. This vulnerability is classified as a missing authorization issue, which fundamentally represents an insecure direct object reference or broken access control mechanism where the application fails to properly verify that the user initiating a request has the necessary permissions for the specific resource being accessed. In the context of e-commerce platforms like WooCommerce, such flaws can allow attackers to bypass intended security boundaries and interact with administrative functions or sensitive data without proper authentication checks.
From a technical perspective, this vulnerability stems from an incorrectly configured access control logic within the plugin's codebase. The application likely processes requests related to product bundle configurations, pricing rules, or inventory management without adequately validating whether the current user session possesses administrator privileges or specific role-based permissions required for those actions. This oversight allows any authenticated user with even minimal capabilities, such as a subscriber or customer, to potentially execute administrative operations intended exclusively for site administrators. The flaw is not necessarily in the encryption or input validation but rather in the logical enforcement of who can perform what actions within the system's backend interface.
The operational impact of this vulnerability is significant due to its potential for privilege escalation and data manipulation. An attacker could exploit this misconfiguration to modify product bundle settings, alter pricing structures, change inventory levels, or even delete critical e-commerce configurations without authorization. This compromises the integrity of the online store's operations and financial records. Furthermore, depending on how these administrative functions interact with other system components, there may be secondary risks involving cross-site scripting if user input is reflected in admin panels without proper sanitization after being modified by an unauthorized actor. The ability to manipulate product bundles can lead to direct revenue loss through fraudulent pricing changes or inventory depletion strategies that disrupt normal business operations.
This vulnerability aligns with CWE-269, which describes Improper Privilege Assignment, and falls under the broader category of CWE-862, Missing Authorization. In terms of offensive security frameworks like MITRE ATT&CK, this behavior corresponds to techniques involving privilege escalation or unauthorized access to administrative functions, often categorized under lateral movement or persistence if used to maintain control over a compromised account. Attackers typically exploit such flaws by crafting specific HTTP requests that target internal API endpoints or admin-ajax actions associated with the plugin, bypassing standard UI-based permission checks that are enforced on legitimate user interfaces but not consistently applied in backend logic handlers.
Mitigation strategies should prioritize immediate remediation through software updates. Administrators running affected versions must upgrade YITH WooCommerce Product Bundles to a version later than 2.29.0 where the vendor has presumably patched this access control gap. Until an update is available, temporary mitigations include restricting administrative capabilities strictly to trusted users and ensuring that no low-privilege accounts have unnecessary permissions within the WordPress environment. Additionally, implementing Web Application Firewalls can help detect anomalous patterns of requests targeting admin-ajax actions or plugin-specific endpoints from non-administrator IP addresses or user agents, providing an additional layer of defense against exploitation attempts while permanent fixes are deployed.