CVE-2018-10209 in Enterprise File Sharing
Summary
by MITRE
An issue was discovered in Vaultize Enterprise File Sharing 17.05.31. There is Stored XSS on the file or folder download pop-up via a crafted file or folder name.
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Analysis
by VulDB Data Team • 05/30/2025
The vulnerability identified as CVE-2018-10209 represents a critical stored cross-site scripting flaw within Vaultize Enterprise File Sharing version 17.05.31. This security weakness manifests in the file or folder download pop-up interface where user-supplied input is not properly sanitized before being rendered back to users. The vulnerability stems from inadequate input validation and output encoding mechanisms that fail to prevent malicious script execution when users interact with specially crafted file or folder names. Attackers can exploit this weakness by uploading or renaming files and folders with malicious script content within their names, which then executes in the context of other users who subsequently interact with these objects through the download pop-up interface.
The technical implementation of this vulnerability falls under CWE-79, which specifically addresses Cross-Site Scripting flaws in software applications. This classification indicates that the application fails to properly escape or encode user-controllable data before incorporating it into dynamically generated web content. The vulnerability operates through a stored XSS pattern where malicious payloads are permanently stored within the application's database or file system and subsequently executed when legitimate users access the affected interface. The download pop-up functionality serves as the attack vector where the malicious script payload is rendered without proper sanitization, allowing attackers to execute arbitrary JavaScript code within the victim's browser session.
The operational impact of CVE-2018-10209 extends beyond simple script execution as it can enable attackers to perform a wide range of malicious activities including session hijacking, credential theft, data exfiltration, and privilege escalation. When legitimate users encounter the maliciously crafted file or folder names in the download pop-up, their browsers execute the embedded scripts which can steal authentication cookies, redirect users to malicious domains, or inject additional malware into the victim's system. The persistent nature of stored XSS means that the attack remains effective until the malicious content is removed from the application's data stores, potentially affecting multiple users over extended periods. This vulnerability particularly impacts enterprise environments where file sharing systems serve as central collaboration platforms, making the potential attack surface substantial.
Mitigation strategies for CVE-2018-10209 should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's data flow. Organizations should immediately implement proper HTML escaping and sanitization of all user-supplied content before rendering it in web interfaces, particularly in contexts where dynamic content is generated for user interaction. The application should enforce strict validation of file and folder names to prevent the inclusion of potentially dangerous characters or script tags. Additionally, implementing Content Security Policy headers can provide an additional layer of protection by restricting the sources from which scripts can be executed within the application's context. Security patches should be applied promptly to update Vaultize Enterprise File Sharing to versions that address this vulnerability, while network monitoring should be enhanced to detect potential exploitation attempts through unusual file naming patterns or suspicious download activities. The implementation of web application firewalls and regular security assessments can further strengthen defenses against similar stored XSS vulnerabilities in enterprise file sharing systems.