CVE-2026-107266 in Views Share
Summary
by MITRE • 10/30/2026
Missing Authorization vulnerability in Drupal Views Share allows Forceful Browsing. This issue affects Views Share versions: from 0.0.0 to 2.0.1.
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Analysis
by VulDB Data Team • 10/30/2026
The identified security flaw resides within the Drupal module known as Views Share, specifically affecting version ranges from 0.0.0 up through and including version 2.0.1. This vulnerability is classified fundamentally as a Missing Authorization issue, which technically manifests as Forceful Browsing capabilities for an attacker. In the context of web application security, missing authorization errors occur when an application fails to verify that a user has the appropriate permissions or privileges to access specific resources or perform certain actions before executing them. For Views Share, this architectural weakness implies that the module does not adequately enforce access controls on its internal endpoints or API calls, allowing any authenticated user with even minimal site privileges to interact with functionality intended for administrators or users with higher clearance levels.
From a technical perspective, the vulnerability exploits the lack of proper role-based access control checks within the Views Share logic. When a request is made to manipulate shared views content, such as creating, editing, or deleting share configurations, the application processes these requests without sufficiently validating whether the requesting user possesses the necessary rights. This oversight allows an attacker who has successfully authenticated with low-level credentials, such as those of a basic subscriber or editor role, to bypass intended restrictions and execute administrative functions. The mechanism relies on the attacker directly invoking specific URLs or API endpoints associated with the Views Share module, effectively forcing the server to perform actions that should be restricted by design. This type of flaw is commonly categorized under CWE-284 Improper Access Control in standard vulnerability classification systems, highlighting the failure to restrict access to resources based on user roles and permissions.
The operational impact of this vulnerability can vary significantly depending on the specific configuration of the Drupal site and the capabilities granted within the Views Share module. If the shared views functionality allows for significant content manipulation or integration with other sensitive modules, an attacker could potentially alter public-facing view displays, inject malicious configurations, or disrupt service availability by creating invalid share links that consume server resources. In more severe scenarios where the module interacts closely with user data or administrative settings, the lack of authorization checks could lead to unauthorized modification of site-wide sharing policies, effectively compromising the integrity and confidentiality of shared content structures. This represents a serious risk as it undermines the principle of least privilege, allowing low-privileged users to escalate their effective permissions within the application context without requiring additional exploitation techniques like cross-site scripting or SQL injection.
To mitigate this vulnerability, immediate action is required by upgrading the Views Share module to version 2.0.2 or any later release where these authorization checks have been properly implemented and tested. Site administrators should verify that all modules are updated to their latest stable versions provided by the Drupal security team. In addition to patching, it is advisable to review user roles and permissions within the Drupal administration interface to ensure that no unnecessary privileges are granted to low-level accounts. Implementing a Web Application Firewall can also provide an additional layer of defense by detecting and blocking anomalous requests that attempt to access restricted endpoints directly. Furthermore, regular security audits focusing on access control logic across all custom modules will help identify similar gaps in authorization enforcement before they can be exploited. This incident aligns with the MITRE ATT&CK technique T1078 Valid Accounts, as it involves an attacker leveraging legitimate but insufficiently privileged credentials to perform unauthorized actions within the system environment.