CVE-2026-74018 in Warehouse Cargo Plugin
Summary
by MITRE • 08/20/2026
Subscriber Arbitrary File Upload in Warehouse Cargo <= 2.6.9 versions.
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Analysis
by VulDB Data Team • 08/20/2026
The vulnerability identified as an arbitrary file upload flaw within the Warehouse Cargo application prior to version 2.6.9 represents a critical security deficiency that allows unauthorized users to bypass authentication mechanisms and execute malicious code on the target server. This issue stems from insufficient validation of uploaded files, specifically targeting functionality accessible by subscribers or authenticated users who possess elevated privileges but lack proper administrative oversight. The core technical flaw lies in the application's failure to enforce strict constraints on file types, extensions, and content verification during the upload process. By exploiting this weakness, an attacker can craft a request containing a malicious payload disguised as a legitimate document or image, thereby tricking the server into storing executable scripts within accessible directories. This capability effectively grants the attacker remote code execution rights under the context of the web service account, which often possesses significant permissions to read and write application data.
From a technical perspective, this vulnerability aligns closely with CWE-434, which describes the unrestricted upload of files with dangerous types. The exploitation typically involves manipulating HTTP POST requests to include multipart form-data where the file extension is altered or hidden within metadata fields such as Content-Type headers. Since the vulnerable versions do not adequately sanitize these inputs or verify that the uploaded content matches its declared type using magic bytes, the server processes and saves the file without triggering security alerts. This lack of input validation creates a direct pathway for attackers to deploy web shells, backdoors, or other malicious scripts into public-facing directories where they can be easily accessed via standard HTTP GET requests. The absence of proper access controls further exacerbates the risk, as these uploaded files may reside in paths that are directly executable by the underlying web server software such as Apache or Nginx.
The operational impact of this vulnerability is severe and multifaceted. Once a malicious file is successfully uploaded and executed, the attacker gains full control over the compromised system. This can lead to complete data exfiltration, including sensitive customer information, financial records, and proprietary business logic stored within the Warehouse Cargo database. Furthermore, the compromised server may be used as a pivot point for lateral movement into other parts of the internal network, facilitating broader infrastructure compromise. Attackers often leverage such access to install cryptominers, launch distributed denial-of-service attacks against third parties, or deploy ransomware that encrypts critical data for extortion purposes. The persistence provided by web shells ensures long-term unauthorized access even if initial entry points are patched, making remediation efforts more complex and time-consuming.
This vulnerability is also mapped to the MITRE ATT&CK framework under techniques such as T1505.003, which refers to Web Shell components, and potentially T1059, Command and Scripting Interpreter, depending on how the uploaded file is utilized post-exploitation. The ability to upload arbitrary files directly supports subsequent stages of an attack chain including persistence, privilege escalation, and credential dumping. Organizations relying on older versions of Warehouse Cargo are at significant risk because these legacy systems often run with outdated dependencies that may contain additional unpatched vulnerabilities compounding the threat landscape.
To mitigate this vulnerability, immediate action is required to upgrade the Warehouse Cargo application to version 2.6.9 or later where the file upload logic has been hardened. Implementing strict allow-lists for permitted file extensions and MIME types on both the client-side interface and server-side processing layers is essential. Additionally, deploying files into non-executable directories with restricted permissions can prevent direct execution of uploaded content even if an attacker manages to bypass initial validation checks. Enabling Web Application Firewall rules that detect common web shell signatures in upload streams provides an additional layer of defense. Regular security audits and penetration testing should be conducted to identify similar weaknesses across other modules within the application ecosystem, ensuring comprehensive protection against file-based attacks.