CVE-2026-19084 in shared-files-pro Plugin
Summary
by MITRE • 08/28/2026
The shared-files-pro WordPress plugin before 1.7.70 does not validate the file path supplied when creating a featured image, allowing unauthenticated attackers to read arbitrary files from the server and republish their contents at a public URL.
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Analysis
by VulDB Data Team • 08/28/2026
The vulnerability identified in the shared-files-pro WordPress plugin prior to version 1.7.70 represents a critical security flaw rooted in improper input validation of file path parameters during image processing operations. Specifically, when an administrator or user attempts to set a featured image for a post or page, the plugin accepts a file path without adequately sanitizing it against directory traversal sequences such as dot-dot-slash characters. This lack of rigorous validation allows an attacker to manipulate the intended target file location, effectively bypassing the expected scope of accessible directories within the WordPress installation. The flaw is particularly severe because it does not require any form of authentication or user privileges, meaning that anyone with access to the public-facing website can exploit this mechanism remotely.
From a technical perspective, this vulnerability falls under the category of Path Traversal and Unrestricted File Read as defined by the Common Weakness Enumeration (CWE-22). The core issue lies in the application's failure to canonicalize or strictly validate the file path before passing it to underlying system functions responsible for reading and serving files. By injecting relative paths that escape the intended directory boundary, an attacker can reference sensitive configuration files, source code containing database credentials, private keys, or other internal server resources. The plugin then proceeds to read these arbitrary files from the local filesystem and serves their contents through a public URL associated with the featured image functionality. This transforms what should be a simple media management feature into a powerful remote file inclusion vector that results in unauthorized data disclosure rather than code execution, although the exposure of sensitive configuration data can often serve as a precursor to more severe attacks such as SQL injection or server compromise if credentials are exposed.
The operational impact of this vulnerability is significant for any organization relying on WordPress for content management and web presence. The ability to read arbitrary files means that attackers can extract database connection strings, API keys, encryption secrets, and internal network configurations stored in configuration files like wp-config.php or custom environment files. This information leakage facilitates further reconnaissance and targeted attacks against the underlying infrastructure. Furthermore, because the vulnerability is unauthenticated, it lowers the barrier for entry significantly, allowing automated scanning tools to easily identify and exploit vulnerable instances across the internet at scale. The republishing of these contents at a public URL ensures that the stolen data remains accessible without requiring additional interaction from the attacker after the initial request, making detection by standard intrusion prevention systems more difficult as the traffic appears similar to legitimate media requests.
Mitigation strategies for this vulnerability involve immediate remediation through software updates and defensive configuration changes. The primary and most effective solution is to upgrade the shared-files-pro plugin to version 1.7.70 or later, where the developers have implemented proper input validation and path canonicalization checks to prevent directory traversal attacks. For environments where updating is not immediately feasible, administrators should consider disabling the specific feature that handles featured image creation via file paths if it is not strictly necessary for their workflow. Additionally, implementing Web Application Firewall rules can help detect and block requests containing suspicious path traversal patterns such as ../ or encoded variations thereof before they reach the application logic. Regular security audits and penetration testing of WordPress plugins are also recommended to identify similar vulnerabilities in other components that handle file operations, ensuring a robust defense-in-depth posture against information disclosure threats aligned with MITRE ATT&CK techniques related to Collection and Exfiltration over Alternative Protocol channels.