An absolute path traversal vulnerability (CWE-36) in Micro Focus Vibe 4.0.2 and earlier allows a remote authenticated attacker to download arbitrary files from the server by submitting a specially crafted request to the viewFile endpoint. Note that the attack can be performed without authentication if Guest access is enabled (Guest access is disabled by default).
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.