CVE-2026-118569 in Fasttoggle
Summary
by MITRE • 10/30/2026
Incorrect Authorization vulnerability in Drupal Fasttoggle allows Forceful Browsing. This issue affects Fasttoggle versions: from 0.0.0 to 4.1.1.
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Analysis
by VulDB Data Team • 10/30/2026
The Drupal module known as Fasttoggle, specifically within the version range spanning from 0.0.0 up to and including 4.1.1, contains a critical access control flaw that permits unauthorized users to bypass intended permission checks. This vulnerability is classified under CWE-285, which denotes Improper Authorization, indicating that the application fails to properly verify whether an authenticated user has the necessary privileges to perform specific actions or access certain resources. The core of this issue lies in the module's handling of administrative functions related to toggling features on and off within a Drupal environment. While the interface may present options for enabling or disabling modules or configurations, the underlying code does not adequately validate that the requesting user possesses the requisite administrator-level permissions before executing these state-changing operations.
This technical deficiency effectively allows for forceful browsing attacks against administrative endpoints managed by Fasttoggle. An attacker who has obtained valid credentials for a low-privilege account, such as a standard content editor or subscriber role, can manipulate HTTP requests to interact with API endpoints or form submissions intended exclusively for site administrators. By directly crafting and sending these requests, the attacker circumvents the front-end access controls that typically restrict visibility of administrative menus. This bypass enables the unauthorized modification of system configurations, potentially leading to the enabling of features that should remain disabled or the disabling of critical security modules, thereby altering the fundamental behavior and security posture of the Drupal installation without proper oversight.
The operational impact of this vulnerability is significant for any organization relying on Drupal for its web presence where role-based access control is a primary defense mechanism. If an attacker successfully exploits this flaw, they can escalate their privileges within the application context by manipulating system settings that are not meant to be altered by non-administrative users. This could result in data integrity issues, as configuration changes might affect how content is displayed or processed. Furthermore, if Fasttoggle interacts with other modules or exposes additional attack surfaces through its toggled features, an attacker could leverage this initial foothold to probe for further vulnerabilities, such as cross-site scripting or remote code execution, depending on the specific configurations enabled by the unauthorized toggle actions. The ability to change administrative settings without proper authorization undermines the principle of least privilege and compromises the overall trust model of the web application.
To mitigate this risk, site administrators must immediately upgrade the Fasttoggle module to a version later than 4.1.1, where these access control checks have been corrected by the developers. Until an update is applied, it is advisable to restrict direct access to administrative paths through web server configuration rules or firewall policies if possible, although relying solely on network-level controls is not a substitute for proper application-layer authorization. Additionally, organizations should audit their Drupal user roles and permissions to ensure that no unnecessary privileges are granted to low-privilege accounts, reducing the potential impact of any future access control bypasses. Monitoring logs for unusual patterns in administrative endpoint requests can also help detect attempted exploitation activities early. This vulnerability aligns with MITRE ATT&CK technique T1078, Valid Accounts, as it involves using legitimate credentials to perform actions outside their intended scope due to flawed authorization logic rather than credential theft or compromise.