CVE-2026-118555 in Commerce License
Summary
by MITRE • 10/30/2026
Incorrect Authorization vulnerability in Drupal Commerce License allows Forceful Browsing. This issue affects Commerce License versions: from 0.0.0 to 3.1.1.
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Analysis
by VulDB Data Team • 10/30/2026
The identified security flaw within the Drupal Commerce License module represents a critical failure in access control mechanisms, specifically categorized under CWE-284 Improper Access Control and mapped to MITRE ATT&CK technique T1078 Valid Accounts or potentially T1528 Steal Application Access Token depending on the specific authentication context. This vulnerability manifests as an instance of forceful browsing, also known as insecure direct object reference (IDOR), where the application fails to adequately verify whether the authenticated user has the necessary permissions to access a requested resource. In the affected versions ranging from 0.0.0 through 3.1.1, the module does not sufficiently enforce authorization checks on endpoints or API calls that manage license data, subscription statuses, or associated metadata. Consequently, an attacker who possesses valid credentials for any user account can manipulate input parameters to access sensitive information belonging to other users or administrative entities within the same Drupal installation.
The technical root cause lies in the absence of robust server-side validation when processing requests related to commerce licenses. The application likely relies on client-supplied identifiers such as license IDs, subscription keys, or entity UUIDs without cross-referencing them against the current user's permission set or ownership records. This design oversight allows an adversary to iterate through sequential or predictable resource identifiers to enumerate valid licenses and extract proprietary business logic, customer data, or financial transaction details associated with those licenses. The impact is severe as it compromises the confidentiality of sensitive commercial data and can lead to further exploitation if the exposed license structures contain cryptographic keys or tokens that facilitate deeper system compromise.
From an operational perspective, this vulnerability enables unauthorized entities to bypass intended restrictions on feature access or billing information. Attackers can exploit this flaw to gain insights into competitor pricing models, customer bases, or internal business operations by scraping accessible license records. Furthermore, if the exposed data includes sensitive personal information protected under regulations such as GDPR or CCPA, organizations may face significant legal and reputational consequences due to non-compliance resulting from this data exposure. The lack of proper authorization checks also undermines the integrity of the commerce system, potentially allowing malicious actors to alter subscription statuses or bypass payment validations if additional logic flaws are present in conjunction with this access control failure.
To mitigate this vulnerability, immediate action is required by upgrading the Drupal Commerce License module to a version later than 3.1.1 where these authorization checks have been rectified. In addition to patching, administrators should implement defense-in-depth strategies such as enforcing strict input validation and ensuring that all API endpoints perform rigorous server-side permission verification before returning data. It is also advisable to review access logs for signs of enumeration attacks characterized by sequential ID probing or unusual request patterns targeting license-related resources. Regular security audits focusing on role-based access control configurations will help prevent similar misconfigurations in other modules, ensuring that the principle of least privilege is strictly enforced across all user interactions with commerce data.