A CWE-23 "Relative Path Traversal" in the file upload mechanism in Q-Free MaxTime less than or equal to version 2.11.0 allows an authenticated remote attacker to overwrite arbitrary files via crafted HTTP requests.
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.