InCopy | Unrestricted Upload of File with Dangerous Type (CWE-434)

InCopy versions 19.4, 18.5.3 and earlier are affected by an Unrestricted Upload of File with Dangerous Type vulnerability that could result in arbitrary code execution by an attacker. An attacker could exploit this vulnerability by uploading a malicious file which can then be executed on the server. Exploitation of this issue requires user interaction.