Intigriti's 0521 XSS challenge - by @GrumpinouT

Find a way to execute arbitrary javascript on this page and win Intigriti swag.

Rules:
  • This challenge runs from May 31 until June 7th, 11:59 PM CET.
  • Out of all correct submissions, we will draw six winners on Monday, June 8th:
    • Three randomly drawn correct submissions
    • Three best write-ups
  • Every winner gets a €50 swag voucher for our swag shop
  • The winners will be announced on our Twitter profile.
  • For every 100 likes, we'll add a tip to announcement tweet.
The solution...
  • Should work on the latest version of Firefox or Chrome
  • Should execute alert(document.domain).
  • Should leverage a cross site scripting vulnerability on this domain.
  • Shouldn't be self-XSS or related to MiTM attacks
  • Should be reported at go.intigriti.com/submit-solution
By the way...
  • 🤖 Are you a robot? Our intern built this handy captcha to find out!

    Solve the math problem to prove that you're not a robot: