CVE-2026-112069 in FAL Protect
Summary
by MITRE • 10/20/2026
The extension no longer applied its access protection to files in file storages that use a non-default relative base path. These files were served directly by the web server, without any authentication or permission check. The issue is only exploitable when the extension is used on a website running TYPO3 14.3.
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Analysis
by VulDB Data Team • 10/20/2026
The vulnerability described involves a critical failure in access control mechanisms within a specific software extension designed for the TYPO3 content management system version 14.3. This flaw stems from an incorrect handling of file storage configurations, specifically when those storages are configured to use a non-default relative base path rather than the standard absolute or default relative paths typically expected by the application framework. In secure web applications, files stored in public directories often require additional layers of protection such as authentication checks or permission verifications before being served to end-users. However, due to this implementation error, the extension failed to apply its intended access protection protocols to these specific file locations.
From a technical perspective, the root cause lies in how the web server and the application framework interact regarding path resolution. When a non-default relative base path is utilized, the logic responsible for enforcing security policies likely fails to correctly map or recognize the target files. Consequently, requests for these files bypass the extension's middleware or hook mechanisms that would normally validate user permissions. Instead of being processed through TYPO3’s secure routing and authentication layers, these file requests are served directly by the underlying web server software, such as Apache or Nginx. This direct serving mechanism effectively circumvents any application-level security controls, allowing unauthenticated users to retrieve sensitive data without triggering standard access denial responses.
The operational impact of this vulnerability is severe, particularly in environments where confidential documents, user-specific assets, or restricted media are stored within these misconfigured file storages. Attackers can exploit this flaw by constructing specific URLs that target the non-default relative paths associated with vulnerable installations. Since no authentication or permission check occurs during the request processing phase for these files, any individual with knowledge of the file structure or who discovers valid path patterns can download restricted content. This represents a significant breach of confidentiality and integrity, potentially leading to data leakage, privacy violations, or further exploitation if sensitive configuration details are exposed through stored metadata.
This vulnerability aligns closely with Common Weakness Enumeration (CWE) categories such as CWE-284 Improper Access Control and CWE-552 Files or Directories Accessible to External Parties. The failure to enforce access restrictions on publicly accessible resources is a classic example of broken object level authorization, where the system fails to verify that the requesting user has permission for the specific resource being accessed. In terms of offensive security frameworks like MITRE ATT&CK, this behavior facilitates techniques related to Collection and Exfiltration over Alternative Protocol or Direct Network Access, as attackers can retrieve data without needing valid credentials or triggering typical intrusion detection alerts associated with brute force attacks.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. The primary solution is for the extension maintainer to release a patch that corrects the path resolution logic to ensure access protection hooks are invoked regardless of whether a default or non-default relative base path is configured. Administrators running TYPO3 14.3 with this specific extension should immediately verify their file storage configurations and consider restricting direct web server access to these directories via web server configuration rules, such as using .htaccess files in Apache or location blocks in Nginx to deny public access until the patch is applied. Additionally, implementing strict Content Security Policies and regular security audits of custom extensions can help identify similar misconfigurations before they are exploited in production environments.