ARC Informatique PcVue prior to version 12.0.17 is vulnerable to information exposure, allowing unauthorized users to access session data of legitimate users. This issue also affects third-party systems based on the Web Services Toolkit.
https://www.pcvuesolutions.com/support/index.php/en/security-bulletin/1076-security-bulletin-2020-1
https://www.pcvuesolutions.com/security