Resque Scheduler version 1.27.4 is vulnerable to Cross-site scripting (XSS). A remote attacker could inject javascript code to the "{schedule_job}" or "args" parameter in /resque/delayed/jobs/{schedule_job}?args={args_id} to execute javascript at client side.
https://trungvm.gitbook.io/cves/resque/resque-1.27.4-multiple-reflected-xss-in-resque-schedule-job