CVE-2026-93693 in ShareFile Storage Zones Controller
Summary
by MITRE • 10/12/2026
In Progress ShareFile Storage Zones Controller v5.12.6 and below, improper validation of outbound request destinations and parameters, unsafe JSONP response formatting, and insufficient validation on queue service can be chained by a remote unauthenticated attacker to issue server-side requests to unintended local handlers and perform unauthorized queue operations.
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Analysis
by VulDB Data Team • 10/12/2026
The vulnerability identified in Progress ShareFile Storage Zones Controller versions 5.12.6 and earlier represents a critical security flaw rooted in the application's failure to properly validate outbound request destinations, parameters, and JSONP response formatting. This issue allows remote unauthenticated attackers to exploit multiple weak points within the server-side logic to execute unauthorized actions. The core of the problem lies in insufficient validation mechanisms that fail to restrict or verify the targets of internal requests initiated by the controller itself. When a user interacts with the system, particularly through queue services or API endpoints, the application constructs outbound requests without adequately checking if these destinations are legitimate local handlers or safe external entities. This lack of rigorous destination verification creates an opportunity for Server-Side Request Forgery (SSRF), where an attacker can manipulate input parameters to redirect internal traffic to unintended targets within the network infrastructure.
Furthermore, the unsafe formatting of JSONP responses exacerbates this risk by allowing attackers to inject malicious payloads that are executed in the context of the victim's browser or processed incorrectly by server-side parsers if they rely on loose parsing rules. The combination of improper validation and unsafe response handling enables a chained attack scenario where an unauthenticated actor can bypass authentication requirements entirely. By crafting specific HTTP requests with manipulated parameters, the attacker forces the ShareFile Storage Zones Controller to issue internal calls to local handlers that were not intended for public access or external initiation. This effectively circumvents security controls designed to isolate sensitive administrative functions from unauthorized users, leading to a complete compromise of the application's integrity and confidentiality.
The operational impact of this vulnerability is severe, as it permits unauthorized queue operations and arbitrary server-side requests without any form of authentication. Attackers can potentially access internal APIs, modify system configurations, or exfiltrate data by leveraging these unintended local handlers. The ability to perform unauthorized queue operations means that critical business processes managed through the ShareFile platform could be disrupted, manipulated, or exploited for further lateral movement within a corporate network. This vulnerability aligns with CWE-918, which addresses Server-Side Request Forgery flaws resulting from improper validation of user-supplied input used in server-side requests. It also maps to MITRE ATT&CK techniques related to Command and Control via application layer protocols, as well as potential exploitation paths involving unauthorized access to sensitive resources due to insufficient authentication checks.
To mitigate this vulnerability, organizations running Progress ShareFile Storage Zones Controller must immediately apply the latest security patches provided by Progress Software that address these validation flaws. It is crucial to ensure that all outbound requests are strictly validated against a whitelist of allowed destinations and that parameters are sanitized before being processed by internal handlers. Additionally, developers should enforce strict JSONP response formatting rules to prevent injection attacks and implement robust input validation on queue services to reject malformed or maliciously crafted requests. Network-level controls such as firewalls can also be configured to restrict outbound traffic from the ShareFile server to only necessary external endpoints, adding an additional layer of defense against SSRF attempts. Regular security audits and penetration testing should be conducted to identify similar weaknesses in other components of the application stack before they can be exploited by malicious actors seeking to compromise sensitive data or disrupt service availability.