Safe Software FME Server through 2018.1 creates and enables three additional accounts in addition to the initial administrator account. The passwords to the three accounts are the same as the usernames, which are guest, user, and author. Logging in with these accounts will grant any user the default privilege roles that were also created for each of the accounts.

Unauthenticated Stored XSS in FME Server versions 2019.2 and 2020.0 Beta allows a remote attacker to gain admin privileges by injecting arbitrary web script or HTML via the login page. The XSS is executed when an administrator accesses the logs.

Authenticated Stored XSS in FME Server versions 2019.2 and 2020.0 Beta allows a remote attacker to execute codeby injecting arbitrary web script or HTML via modifying the name of the users. The XSS is executed when an administrator access the logs.

Safe Software FME Server v2021.2.5, v2022.0.0.2 and below contains a cross-site scripting (XSS) vulnerability which allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the login page.

Safe Software FME Server v2021.2.5, v2022.0.0.2 and below was discovered to contain a Path Traversal vulnerability via the component fmedataupload.

Safe Software FME Server v2021.2.5 and below does not employ server-side validation.

Safe Software FME Server v2021.2.5, v2022.0.0.2 and below was discovered to contain a XML External Entity (XXE) vulnerability which allows authenticated attackers to perform data exfiltration or Server-Side Request Forgery (SSRF) attacks.

A directory traversal vulnerability in Safe Software FME Server before 2022.2.5 allows an attacker to bypass validation when editing a network-based resource connection, resulting in the unauthorized reading and writing of arbitrary files. Successful exploitation requires an attacker to have access to a user account with write privileges. FME Flow 2023.0 is also a fixed version.