All the vulnerabilities related to the version 1.7.1 of the package
Koajs vulnerable to Cross-Site Scripting (XSS) at ctx.redirect() function
In koa < 2.16.1 and < 3.0.0-alpha.5, passing untrusted user input to ctx.redirect() even after sanitizing it, may execute javascript code on the user who use the app.
This issue is patched in 2.16.1 and 3.0.0-alpha.5.
Coming soon...