CVE-2026-76158 in Data Management Center
Summary
by MITRE • 08/21/2026
External Control of File Name or Path in the upload API endpoint of Datiphy Data Management Center from v8.3.0 through v8.5.1 allows a remote attacker to write files to arbitrary locations outside the intended upload directory via relative or absolute path sequences.
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Analysis
by VulDB Data Team • 08/21/2026
The vulnerability identified as External Control of File Name or Path within the Datiphy Data Management Center represents a critical security flaw affecting versions 8.3.0 through 8.5.1. This issue resides specifically in the application's upload API endpoint, which is designed to accept file submissions from users for data management purposes. The core technical deficiency lies in the server-side validation logic that processes these incoming uploads. Instead of strictly sanitizing or canonicalizing the provided filename and path information, the system fails to adequately restrict the destination directory structure. This oversight allows an attacker who has access to the upload functionality to manipulate the file path parameters during transmission. By injecting relative path sequences such as dot-dot-slash characters or absolute paths into the request payload, a remote attacker can bypass the intended isolation mechanisms that confine uploads to specific directories.
From a technical perspective, this flaw is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory. The vulnerability exploits the lack of robust input validation and path canonicalization routines within the application code. When an upload request is received, the server likely concatenates user-supplied filename strings with a base directory path without verifying that the resulting absolute path remains within the allowed boundaries. This behavior enables arbitrary file write operations on the underlying operating system's filesystem. The attacker can craft requests where the destination path resolves to locations outside the designated upload folder, potentially targeting sensitive areas of the server such as configuration directories, web root folders for script injection, or other application-specific storage paths that may contain critical data or executable code.
The operational impact of this vulnerability is severe and multifaceted. The most immediate consequence is unauthorized file creation on the target system. If an attacker can write files to a directory served by a web server, they could upload malicious scripts such as PHP, Python, or ASPX shells. This leads directly to Remote Code Execution (RCE), allowing the attacker to gain full control over the application and potentially the underlying host operating system. Even if direct code execution is not immediately possible due to file type restrictions, arbitrary file writes can be leveraged for other attacks. For instance, an attacker might overwrite configuration files to alter application behavior, inject malicious content into log files for later parsing exploitation, or create symbolic links to read sensitive files from restricted areas of the filesystem through subsequent requests that do not suffer from this specific flaw.
In terms of threat modeling and industry standards, this vulnerability aligns with MITRE ATT&CK technique T1505: Server Software Component, specifically sub-technique T1505.002 which involves Web Shell deployment. The attack vector is classified as Remote (Network) with Low or Medium complexity depending on the authentication requirements of the upload endpoint. If the API requires no authentication, it constitutes a high-severity public-facing vulnerability. If authentication is required, it remains critical for any authenticated user account that possesses file upload privileges. The ability to write files outside intended directories fundamentally breaks the principle of least privilege and isolation expected in secure application design, compromising the integrity and availability of the Datiphy Data Management Center infrastructure.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. For organizations currently running affected versions between 8.3.0 and 8.5.1, the primary recommendation is to apply the vendor-provided patch or update to a version where this issue has been resolved. If an immediate upgrade is not feasible, temporary mitigations should be implemented at the network perimeter using Web Application Firewalls (WAF). These rules can detect and block HTTP requests containing suspicious path traversal sequences such as ../ or ..\ in file upload parameters. Additionally, administrators should enforce strict allow-listing of acceptable file extensions on the server side to prevent executable script uploads from being written to any location, even if they bypass directory restrictions.
From a development perspective, this vulnerability highlights the necessity for secure coding practices regarding file handling. Developers must implement rigorous input validation that rejects any filename or path containing non-alphanumeric characters except those explicitly required by the application logic. Furthermore, server-side code should resolve all paths to their absolute canonical forms before processing them and verify that the final resolved path starts with the expected base directory prefix. Utilizing standard library functions designed for safe file operations rather than manual string concatenation can significantly reduce the risk of such flaws. Regular security testing, including static application security testing (SAST) and dynamic application security testing (DAST), should be integrated into the development lifecycle to identify similar path traversal issues before deployment.