In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a reflected cross-site scripting (XSS) vulnerability exists in WS_FTP Server's Ad Hoc Transfer module.  An attacker could leverage this vulnerability to target WS_FTP Server users with a specialized payload which results in the execution of malicious JavaScript within the context of the victims browser.

Reflected XSS (via AngularJS sandbox escape expressions) exists in Progress Ipswitch WS_FTP Server 8.6.0. This can lead to execution of malicious code and commands on the client due to improper handling of user-provided input. By inputting malicious payloads in the subdirectory searchbar or Add folder filename boxes, it is possible to execute client-side commands. For example, there is Client-Side Template Injection via subFolderPath to the ThinClient/WtmApiService.asmx/GetFileSubTree URI.

In Progress WS_FTP Server before 8.8, it is possible for a host administrator to elevate their privileges via the administrative interface due to insufficient authorization controls applied on user modification workflows.

In Progress WS_FTP Server prior to version 8.7.3, forms within the administrative interface did not include a nonce to mitigate the risk of cross-site request forgery (CSRF) attacks.

In Progress WS_FTP Server prior to version 8.7.3, multiple reflected cross-site scripting (XSS) vulnerabilities exist in the administrative web interface. It is possible for a remote attacker to inject arbitrary JavaScript into a WS_FTP administrator's web session. This would allow the attacker to execute code within the context of the victim's browser.

A Directory Traversal issue was discovered in SSHServerAPI.dll in Progress ipswitch WS_FTP Server 2018 before 8.6.1. An attacker can supply a string using special patterns via the SCP protocol to disclose path names on the host operating system.

A Directory Traversal issue was discovered in SSHServerAPI.dll in Progress ipswitch WS_FTP Server 2018 before 8.6.1. Attackers have the ability to abuse a flaw in the SCP listener by crafting strings using specific patterns to write files and create directories outside of their authorized directory.

An issue was discovered in SSHServerAPI.dll in Progress ipswitch WS_FTP Server 2018 before 8.6.1. Attackers have the ability to abuse a path traversal vulnerability using the SCP protocol. Attackers who leverage this flaw could also obtain remote code execution by crafting a payload that abuses the SITE command feature.

A Directory Traversal issue was discovered in SSHServerAPI.dll in Progress ipswitch WS_FTP Server 2018 before 8.6.1. An attacker can supply a string using special patterns via the SCP protocol to disclose WS_FTP usernames as well as filenames.

Ipswitch WS_FTP Professional before 12.6.0.3 has buffer overflows in the local search field and the backup locations field, aka WSCLT-1729.