PM-197 - XSS poor validation error handling #7023
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https://topcoder.atlassian.net/browse/PM-197 - Cross-Site Scripting: Poor Validation (17 issues)
To avoid user input via url, when redirecting away from the platform (eg. to login / to social platforms), set the return url as location.origin + location.pathname. In theory this should avoid any unknown user input as paths are predetermined and can not be considered untrusted user input.