An issue was discovered in Znuny and Znuny LTS 6.0.31 through 6.5.7 and Znuny 7.0.1 through 7.0.16 where a logged-in user can upload a file (via a manipulated AJAX Request) to an arbitrary writable location by traversing paths. Arbitrary code can be executed if this location is publicly available through the web server.
CWE-94 Improper Control of Generation of Code ('Code Injection')