Since October 2025, A security report by RyotaK has warned Unity that there is a vulnerability in the engine since version 2017.1, and has therefore provided a link to the following measures that need to be taken into account:

https://unity.com/es/security/sept-2025-01/remediation

As a precaution, current version was patched (maybe also free betas), but for subsequent updates will be built on Unity 2019.2.23 or simply patched with the Unity Application Patcher.