CVE-2026-76601 in Extension
Summary
by MITRE • 08/22/2026
Joomla Extension - fabrikar.com - Unauthenticated row reordering in Fabrik < 4.7.2 - The order plugin did not perform any access checks.
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Analysis
by VulDB Data Team • 08/22/2026
The vulnerability identified within the Fabrik extension for Joomla, specifically affecting versions prior to 4.7.2, represents a critical failure in server-side access control mechanisms regarding data manipulation operations. This flaw is categorized under CWE-862, which denotes Missing Authorization, and aligns with MITRE ATT&CK technique T1059, Command and Scripting Interpreter, as it allows an attacker to execute administrative-level actions without proper authentication or privilege verification. The core of the issue resides in the order plugin functionality, which is designed to manage the display sequence of records within database tables managed by Fabrik. In a secure implementation, any request that modifies the state of data, such as changing row positions, must be rigorously validated against the current user's permissions and session status. However, in this vulnerable version, the endpoint responsible for processing reordering requests fails to verify whether the initiating actor possesses the necessary administrative privileges or even valid authentication credentials.
From a technical perspective, the absence of access checks means that the application logic blindly accepts input parameters related to record identifiers and their new positional values from any client-side source. An unauthenticated attacker can craft specific HTTP POST requests containing JSON payloads or form data that specify the target row ID and its desired order position. Because the server does not interrogate the session token, user role, or permission matrix before executing the database update query, it proceeds to modify the record ordering as requested. This lack of validation extends beyond simple UI manipulation; since Fabrik often serves as a backend for complex data structures in Joomla sites, manipulating row order can have cascading effects on how data is presented and potentially accessed by other parts of the application that rely on this specific sorting logic.
The operational impact of this vulnerability allows an unauthenticated remote attacker to achieve unauthorized state changes within the web application's database layer. While reordering rows might initially appear as a low-severity nuisance, it can be leveraged for more severe attacks depending on how the data is consumed downstream. For instance, if certain records are displayed based on their position in a list that feeds into other business logic or API endpoints, an attacker could manipulate this order to bypass intended display filters or expose sensitive information inadvertently sorted to the top of lists. Furthermore, in environments where Fabrik is used for content management or user data handling, such manipulation can disrupt operational integrity and serve as a foothold for further exploitation if combined with other vulnerabilities like SQL injection or cross-site scripting that rely on predictable data structures.
Mitigation strategies must prioritize immediate patching to the latest stable version of the Fabrik extension where this access control flaw has been addressed by implementing strict role-based access controls (RBAC) on all administrative endpoints and API calls. Developers should ensure that every state-changing operation, particularly those involving database writes or order modifications, includes a mandatory verification step against the authenticated user's permissions before processing any input. Additionally, defense-in-depth measures such as enforcing CSRF tokens for all form submissions and implementing rate limiting can help mitigate automated exploitation attempts. For organizations unable to patch immediately due to dependency constraints, network-level controls like Web Application Firewalls (WAF) should be configured to detect and block anomalous POST requests targeting the specific Fabrik order endpoints that lack valid session cookies or administrative headers.