CVE-2026-95602 in Request A Quote Plugin
Summary
by MITRE • 09/23/2026
Authorization Bypass Through User-Controlled Key vulnerability in YITH YITH WooCommerce Request A Quote allows Exploiting Incorrectly Configured Access Control Security Levels.
This issue affects YITH WooCommerce Request A Quote: from n/a before 4.46.1.
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Analysis
by VulDB Data Team • 09/23/2026
The identified vulnerability represents a critical failure in access control mechanisms within the YITH WooCommerce Request A Quote plugin, specifically classified as an Authorization Bypass Through User-Controlled Key. This flaw allows attackers to manipulate input parameters that serve as keys for accessing sensitive administrative functions or data structures without proper authorization checks. The core technical issue stems from insufficient validation of user-supplied identifiers when processing requests related to quote management. By crafting specific HTTP requests with manipulated key values, an authenticated attacker can bypass intended security boundaries and perform actions reserved for higher-privileged users, such as administrators. This type of vulnerability is fundamentally rooted in a lack of server-side enforcement of object-level permissions, where the application trusts client-provided identifiers rather than verifying them against established access control policies stored on the server side.
From a technical perspective, this flaw aligns with CWE-284 Improper Access Control and more specifically CWE-639 Authorization Bypass Through User-Controlled Key. The vulnerability likely manifests in endpoints that handle quote creation, modification, or retrieval processes where unique identifiers are passed via GET parameters, POST data, or headers. If the application uses these keys to directly query a database or access internal objects without cross-referencing them against the current user's permission set, it creates an opportunity for privilege escalation. An attacker can iterate through sequential IDs or guess valid key formats to access quotes belonging to other users or modify quote settings that should be restricted. This bypasses the intended role-based access control model, effectively granting lower-privileged accounts administrative capabilities over sensitive commerce data.
The operational impact of this vulnerability is severe for e-commerce platforms relying on this plugin. Successful exploitation can lead to unauthorized modification of customer quotes, potentially altering pricing structures, product selections, or delivery terms before they are finalized by the store owner. This integrity compromise undermines trust in the transaction process and can result in financial losses if fraudulent quote modifications go undetected. Furthermore, depending on the specific implementation details within the plugin's codebase, this authorization bypass could serve as a stepping stone for further attacks, such as Cross-Site Scripting (XSS) or SQL Injection, by allowing access to input fields that are not properly sanitized in administrative interfaces. The ability to manipulate quote data also poses significant risks to business logic integrity and customer relationship management systems integrated with the platform.
Mitigation strategies must prioritize immediate patching of the affected software version. Administrators running versions prior to 4.46.1 should upgrade to this patched release or later, where developers have implemented stricter validation checks for user-controlled keys. In addition to updating the plugin, organizations should enforce strict input validation and ensure that all access control decisions are made server-side based on verified session tokens and role assignments rather than client-supplied identifiers. Implementing robust logging and monitoring solutions can help detect anomalous patterns of quote access or modification attempts indicative of exploitation activity. Security teams should also review their overall authentication and authorization architecture to ensure compliance with industry standards such as OWASP Access Control Cheat Sheet, emphasizing the principle of least privilege and explicit deny-by-default policies for all sensitive operations.