CVE-2026-107267 in DKAN
Summary
by MITRE • 10/30/2026
Missing Authorization vulnerability in Drupal DKAN allows Forceful Browsing. This issue affects DKAN versions: from 0.0.0 to 4.0.4, from 4.1.0 to 4.1.5.
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Analysis
by VulDB Data Team • 10/30/2026
The identified security flaw represents a critical failure in access control mechanisms within the Drupal-based DKAN data management platform. This vulnerability stems from an insufficient authorization check that allows unauthenticated or improperly authenticated users to perform forceful browsing against sensitive endpoints and resources. In web application architecture, proper authorization ensures that only authorized entities can access specific functions or data based on their assigned roles and permissions. The absence of these checks in the affected versions creates a direct pathway for attackers to traverse directories and files that should remain restricted, effectively bypassing intended security boundaries. This type of flaw is fundamentally categorized under CWE-284 Improper Access Control, which highlights the system's inability to restrict access to resources based on user identity or privilege level.
The operational impact of this vulnerability is significant for organizations relying on DKAN for data publishing and management. Attackers can exploit the missing authorization logic to discover internal file structures, potentially accessing configuration files that may contain database credentials, API keys, or other sensitive system parameters. Furthermore, if the application exposes administrative interfaces or private datasets through these browsable paths, attackers could retrieve proprietary information or manipulate public-facing content without proper authentication. This undermines the integrity and confidentiality of the data hosted on the platform, leading to potential regulatory compliance violations depending on the nature of the exposed data. The vulnerability affects a wide range of versions, specifically from 0.0.0 up to 4.0.4 and from 4.1.0 through 4.1.5, indicating that this architectural weakness has persisted across multiple major releases due to incomplete remediation efforts in earlier patches or the introduction of new endpoints without corresponding access controls in subsequent updates.
From a tactical perspective, this vulnerability aligns with ATT&CK technique T1083 File and Directory Discovery, where adversaries use automated tools or manual commands to enumerate files and directories on compromised systems. In the context of web applications, forceful browsing is often one of the initial steps taken during an attack chain to map out the application's structure before launching more targeted exploits such as remote code execution or SQL injection against discovered endpoints. The persistence of this issue across multiple versions suggests that developers may have addressed specific instances of unauthorized access but failed to implement a comprehensive, centralized authorization framework for all new and existing routes within the DKAN module. This fragmented approach leaves residual attack surfaces open to exploitation by automated scanners and manual penetration testers alike.
To mitigate this risk, immediate action is required to upgrade the DKAN installation to a version that includes the corrected access control logic. Administrators should verify their current version against the vendor's security advisory and apply the latest patches as soon as possible. In addition to upgrading, it is advisable to implement defense-in-depth strategies such as web application firewalls configured to detect and block forceful browsing patterns, including requests for common sensitive file names or directory traversal sequences. Regular security audits and static code analysis should be integrated into the development lifecycle to ensure that all new endpoints are subject to rigorous authorization checks before deployment. Furthermore, principle of least privilege should be enforced by ensuring that web server configurations restrict direct access to critical directories and files at the infrastructure level, providing an additional layer of protection even if application-level controls fail.