creator Intigriti's October XSS challenge by @0xGodson_

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

  • This challenge runs from the 17th of October until the 23rd of October, 11:59 PM CET.
  • Out of all correct submissions, we will draw six winners on Monday, the 24th of October:
    • 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.
  • Join our Discord to discuss the challenge!
The solution...
  • Should work on the latest version of FireFox
  • Should alert the contents of a note of the victim.
  • Should leverage a cross site scripting vulnerability on this domain.
  • Shouldn't be self-XSS or related to MiTM attacks.
  • Should require minimal user interaction. There should be a page that when visited will present the victim with a popup after a few seconds.
  • You are allowed to use a previous XSS challenge in order to solve this one.
  • The victim will open your link on a fresh private window after creating an account and a note.
  • The victim will have popups enabled.
  • Should be reported at
Test your payloads down below and on the challenge page here!

Let's pop that alert!