CVE-2026-51027 in FileThingie
Summary
by MITRE • 07/20/2026
An issue in FileThingie v.2.5.7 allows a remote attacker to obtain sensitive information via the ft2.php component.
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Analysis
by VulDB Data Team • 07/20/2026
The vulnerability present in FileThingie version 2.5.7 represents a critical information disclosure flaw that enables remote attackers to access sensitive system data through the ft2.php component. This type of vulnerability falls under the broader category of insecure direct object references and improper access control mechanisms, commonly classified as CWE-284 according to the Common Weakness Enumeration standard. The flaw exists due to inadequate input validation and authorization checks within the file handling functionality, allowing unauthorized users to bypass normal access controls and retrieve files that should be restricted.
The technical implementation of this vulnerability stems from insufficient sanitization of user-supplied input parameters in the ft2.php script. Attackers can manipulate specific query parameters or file paths to traverse the filesystem and access files outside the intended directory structure. This occurs because the application fails to properly validate or sanitize the file path inputs, allowing directory traversal sequences such as ../ or ..\ to be processed without adequate restrictions. The vulnerability is particularly concerning as it operates at the application level rather than requiring system-level privileges, making it accessible to anyone with network access to the affected service.
The operational impact of this vulnerability extends beyond simple data exposure, creating potential for further exploitation and lateral movement within compromised environments. An attacker who successfully exploits this flaw could gain access to configuration files, database credentials, application source code, or other sensitive artifacts that may reveal additional attack vectors. The information disclosure could lead to credential compromise, system enumeration, and facilitate more sophisticated attacks such as privilege escalation or persistent backdoor installation. According to the MITRE ATT&CK framework, this vulnerability maps to techniques involving credential access and reconnaissance activities, specifically leveraging T1083 (File and Directory Discovery) and T1566 (Phishing for Information).
Organizations running FileThingie v2.5.7 should implement immediate mitigations including applying the latest security patches from the vendor, implementing proper input validation and sanitization measures, and restricting access to the affected component through network segmentation or authentication controls. The remediation approach should involve comprehensive code review of file handling functions, implementation of strict path validation mechanisms, and deployment of web application firewalls to filter malicious requests. Additionally, regular security assessments and vulnerability scanning should be conducted to identify similar issues in other applications within the attack surface, as this class of vulnerability commonly appears in legacy web applications that have not received proper security updates.