Find the FLAG and win Intigriti swag! 🏆

Rules:

• This challenge runs from 25/12/2025 12:00 PM until 31/12/2025, 11:59 PM UTC.
• Out of all correct submissions, we will draw six winners on Monday 05/01/2025:
  • Three randomly drawn correct submissions
  • Three best write-ups
• Every winner gets an exclusive limited-edition t-shirt
• 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 leverage a vulnerability on the challenge page.
• Shouldn't be self-XSS or related to MiTM attacks.
• Should require no user interaction.
• Should require no bruteforcing (if you have to, keep requests below 1 req/sec).
• Should include:
• The flag in the format INTIGRITI{.*}
• The payload(s) used
• Steps to solve (short description / bullet points)
• Should be reported on the Intigriti platform.

Get started:

1. Repeat your attack against the challenge server.