User-1330468790 posted
Hi alvinoo,
1) Is it possible to inform microsoft to upgrade the jquery to the latest version which is 3.5.1 or do a self upgrade?
I am afraid that you can not do a self upgrade. However, you are able to provide a suggestion for upgrade the JQuery to the latest version using user voice from this link:
https://feedback.azure.com/forums/908035-sql-server
Another useful approach would be asking questions in below link since the report viewer is a SQL Server related issue.
https://docs.microsoft.com/en-us/answers/topics/sql-server-reporting-services.html
2) Is it possible to implement security header controls like Cache-Control and Content Security Policy at the IIS level or is it dependent on report viewer control?
It is possible to add security headers from IIS level. However, there might some exceptions depending on what security header you want to add.
Related Link:
Add a custom HTTP response header to a web site that is hosted by IIS
However, I am not sure what you mean on report viewer control.
Could you please provide me with a scenario?
Best regards,
Sean