CVE-2026-118540 in Commerce Core Module
Summary
by MITRE • 10/30/2026
Incorrect Authorization vulnerability in Drupal Commerce Core allows Forceful Browsing. This issue affects Commerce Core versions: from 0.0.0 to 2.41, from 3.0.0 to 3.2.0.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 10/30/2026
The identified security flaw within the Drupal Commerce Core module represents a critical failure in access control mechanisms, specifically categorized under CWE-639 as Authorization Bypass Through Forceful Browsing or IDOR (Insecure Direct Object References). This vulnerability exists across multiple versions of the software, impacting releases from version 0.0.0 through 2.41 and extending into the 3.x branch up to version 3.2.0. The core issue stems from insufficient validation of user permissions when handling requests for specific commerce-related resources such as orders, products, or customer data. In a properly secured system, every request must be authenticated and authorized based on the current user's role and privileges relative to the requested resource. However, in these affected versions, the application logic fails to adequately verify whether the requesting entity has legitimate ownership or administrative rights to access specific entities identified by their unique identifiers.
From an operational perspective, this vulnerability allows attackers to manipulate URL parameters or API payloads to access data belonging to other users or sensitive system configurations that should remain restricted. By systematically incrementing or altering identifier values in HTTP requests, a malicious actor can enumerate and retrieve private information such as customer addresses, payment details, order histories, and inventory levels. This capability effectively bypasses the intended security boundaries of the application, leading to unauthorized data exposure. The impact is severe for e-commerce platforms relying on Drupal Commerce, as it compromises both business confidentiality and individual privacy rights under regulations like GDPR or CCPA. Attackers do not require valid credentials for other accounts; they only need a basic level of access that allows them to send HTTP requests, which can sometimes be achieved even by anonymous users depending on the specific endpoint exploited.
This type of vulnerability aligns with several tactics in the MITRE ATT&CK framework, particularly T1078 Valid Accounts if combined with credential theft or T1539 Steal Web Session Cookie if session hijacking is involved to facilitate further unauthorized access. More directly, it falls under privilege escalation and data exfiltration techniques where the attacker leverages broken object level authorization to move laterally within the application's data structure. The lack of robust server-side checks means that client-side security measures or simple UI restrictions are insufficient to prevent exploitation. Security researchers have noted that such flaws often arise from rapid development cycles where business logic is prioritized over rigorous security auditing, resulting in assumptions about user intent rather than explicit verification of permissions for every action performed on sensitive data objects.
Mitigation strategies must focus on immediate patching and architectural review. The primary remediation step is to upgrade the Drupal Commerce module to a version that includes patches addressing these authorization flaws, ensuring all known vulnerable ranges are updated to their latest secure releases. For organizations unable to immediately update due to compatibility constraints with other modules or custom code, implementing compensating controls is essential. This includes deploying Web Application Firewalls configured to detect and block patterns associated with IDOR attacks, such as sequential identifier manipulation in URLs. Additionally, developers should conduct a thorough audit of all commerce-related endpoints to enforce strict object-level access checks using Drupal’s built-in permission systems or custom modules that validate user ownership before processing any request for sensitive data. Regular security assessments and penetration testing focused on authorization bypasses are recommended to identify similar weaknesses across the entire application stack.