CVE-2026-67282 in Extension
Summary
by MITRE • 08/12/2026
Joomla Extension - fabrikar.com - Unauthenticated remote code execution in Fabrik < 4.6.8 - An unauthenticated attacker could execute arbitrary code by using the frontend listfilter model.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 08/12/2026
The vulnerability identified in Joomla extension Fabrik versions prior to 4.6.8 represents a critical remote code execution flaw that undermines the security posture of affected systems. This vulnerability specifically affects the frontend listfilter model functionality, which is commonly used within Joomla content management systems to filter and display data from database tables. The flaw allows an unauthenticated attacker to execute arbitrary code on the target system without requiring any valid credentials or user privileges, making it particularly dangerous as it can be exploited by anyone who has access to the vulnerable web application.
The technical implementation of this vulnerability stems from insufficient input validation and sanitization within the listfilter model component. When the frontend processes user-supplied data through the listfilter functionality, the system fails to properly sanitize or validate the incoming parameters before incorporating them into database queries or system commands. This lack of proper validation creates a path for attackers to inject malicious code that gets executed with the privileges of the web server process. The vulnerability manifests primarily through the manipulation of filter parameters that are passed to backend processing functions, where the system does not adequately distinguish between legitimate user input and potentially harmful code sequences.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with full control over the affected Joomla installation and underlying server resources. An attacker could leverage this vulnerability to install backdoors, exfiltrate sensitive data, modify content, or use the compromised system as a launchpad for further attacks within the network infrastructure. The unauthenticated nature of the exploit means that defenders have no opportunity to detect or prevent the attack based on user authentication requirements, making it particularly challenging to identify and respond to such incidents. This vulnerability directly impacts the integrity and availability of the web application, potentially leading to complete system compromise and data breaches.
Mitigation strategies for this vulnerability should include immediate application of the vendor-provided security patch that addresses the input validation issues in the frontend listfilter model. Organizations should also implement network-level protections such as web application firewalls that can detect and block malicious requests targeting the vulnerable functionality. Additionally, security teams should conduct thorough audits of all installed Joomla extensions to identify similar vulnerabilities and ensure proper access controls are implemented. The vulnerability aligns with CWE-74 which describes weaknesses related to improper neutralization of special elements in output used by a downstream component, and it maps to ATT&CK technique T1059 for command and scripting interpreter, specifically highlighting the execution of arbitrary code through web application vulnerabilities. Organizations should also consider implementing principle of least privilege for web server accounts and regular security assessments to prevent similar issues from occurring in other components of their Joomla installations.