CVE-2026-5049 in SANnav
Summary
by MITRE • 10/08/2026
A path traversal vulnerability affects the The Zone Alias Import flow feature in Brocade SANnav before 3.0.0a. A local authenticated attacker can write an uploaded content outside the intended directory.
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Analysis
by VulDB Data Team • 10/08/2026
The identified security flaw resides within the zone alias import functionality of Brocade SANnav, a network management platform designed for Fibre Channel storage area networks. This vulnerability is classified as a path traversal issue, specifically falling under CWE-22: Improper Limitation of a Pathname to a Restricted Directory. The core technical deficiency lies in how the application processes user-supplied input during the file upload and import process. When an authenticated local attacker interacts with this feature, they are able to manipulate the file paths associated with uploaded content. By injecting specific directory traversal sequences into the filename or path parameters, the attacker can bypass the intended sandboxing mechanisms that restrict uploads to a designated temporary or working directory. This lack of rigorous input validation and canonicalization allows the application to resolve these maliciously crafted paths incorrectly, leading to file system operations occurring outside the expected boundaries.
The operational impact of this vulnerability is significant because it grants an authenticated local attacker the ability to write arbitrary files to locations on the server's filesystem that are not part of the intended upload directory. Depending on the privileges under which the SANnav service runs and the specific configuration of the underlying operating system, this capability can be leveraged for various malicious purposes. An attacker could overwrite critical application configuration files, inject web shells or backdoors into executable directories, or modify log files to obscure their activities. In a managed environment where SANnav controls storage infrastructure, compromising the integrity of its own installation directory could lead to unauthorized control over network management functions, potentially disrupting connectivity and data availability for connected hosts and storage arrays.
This vulnerability aligns with common attack patterns observed in web application security assessments. It is closely related to ATT&CK technique T1505.003: Web Shell, as the ability to write files outside of restricted directories often facilitates the deployment of persistent access mechanisms like backdoors or command-and-control scripts. Furthermore, it reflects CWE-434: Unrestricted Upload of File with Dangerous Type if the attacker can also control file content alongside path manipulation, although the primary issue here is the location rather than just the type. The existence of such a flaw indicates that the input handling logic for the import feature does not adequately sanitize or validate directory components before passing them to system-level file operations.
To mitigate this risk, immediate remediation should focus on updating the Brocade SANnav software to version 3.0.0a or later, where these path validation checks have been corrected. In scenarios where patching is not immediately feasible, administrators can implement compensating controls at the infrastructure level. This includes restricting file upload permissions for the application user account so that it cannot write outside its designated home directory using operating system-level access control lists. Additionally, deploying a web application firewall with rulesets capable of detecting and blocking path traversal sequences in HTTP requests may provide an additional layer of defense against exploitation attempts while monitoring logs for suspicious activity related to file uploads.