CVE-2026-114540 in Domain Module
Summary
by MITRE • 10/30/2026
Incorrect Authorization vulnerability in Drupal Domain allows Forceful Browsing. This issue affects Domain versions: from 3.0.0 to 3.0.2.
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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 Domain module, specifically impacting version ranges from 3.0.0 through 3.0.2. This vulnerability is classified as an Incorrect Authorization issue, which fundamentally allows for Forceful Browsing by authenticated users who lack the necessary privileges to access specific administrative or sensitive resources. In a typical web application architecture, authorization checks are designed to verify whether a user has permission to perform a requested action on a given resource. However, in this instance, the module fails to adequately validate these permissions before processing requests directed at protected endpoints. This oversight creates an environment where any authenticated account can manipulate URL parameters or request paths to access functionality intended for administrators or users with higher privilege levels, effectively bypassing the application's security boundaries.
From a technical perspective, the root cause lies in the module's handling of HTTP requests related to domain-specific configurations and administrative tasks. The code likely relies on client-side checks or incomplete server-side validation that does not strictly enforce role-based access control for all exposed endpoints. When an attacker constructs a direct request to these vulnerable URLs using tools such as curl, Burp Suite, or simple browser manipulation, the application processes the request without verifying if the session token associated with the user possesses the requisite domain administrator rights. This lack of server-side enforcement means that even users with minimal permissions can view sensitive configuration data, modify site settings, or potentially execute further actions depending on what other functionalities are exposed through these same endpoints. The vulnerability is particularly dangerous because it does not require complex exploitation techniques; it relies solely on the attacker's ability to identify valid URL structures within the Drupal Domain module and attempt access with a low-privilege account.
The operational impact of this vulnerability extends beyond simple data exposure, as it can lead to significant compromise of the web application's integrity and availability. An attacker leveraging forceful browsing through this flaw could gain unauthorized visibility into domain configurations, which may include sensitive information such as database connection details, API keys, or internal network mappings if exposed in configuration files. Furthermore, depending on the specific endpoints affected, an attacker might be able to alter site settings that affect user experience, security policies, or content management workflows. In severe cases, if the vulnerable functions allow for state-changing operations like deleting domains or modifying permissions, the attacker could disrupt service availability or escalate their privileges within the application hierarchy. This undermines the trust model of multi-domain Drupal installations where distinct administrative boundaries are expected to be maintained between different domain entities managed by the same installation.
To mitigate this risk, immediate action is required for all systems running affected versions of the Domain module. The primary and most effective remediation strategy is to upgrade the Drupal Domain module to version 3.0.3 or any subsequent release where these authorization checks have been corrected. Developers should review the commit history associated with the fix to understand exactly which endpoints were vulnerable and ensure that no custom code in their implementation reintroduces similar flaws by bypassing standard Drupal access control hooks. For organizations unable to patch immediately due to compatibility constraints, implementing a Web Application Firewall rule set can provide temporary protection by blocking known malicious request patterns targeting domain administration paths with non-administrator sessions. Additionally, rigorous logging and monitoring should be enabled to detect unusual access attempts from low-privilege accounts to administrative URLs, allowing for rapid incident response if exploitation is suspected.
This vulnerability aligns closely with CWE-269, which describes Improper Privilege Management, as it involves a failure to enforce appropriate user roles during operation execution. It also maps directly to the MITRE ATT&CK technique T1078, specifically Valid Accounts and Default Accounts, where attackers leverage legitimate credentials that have been misused due to insufficient authorization controls. By addressing this flaw through timely updates and robust access control verification, organizations can restore the integrity of their multi-domain Drupal environments and prevent unauthorized escalation or data leakage resulting from forceful browsing attacks.