---
id: 4869
title: "DOJO Challenge #27 Winners!"
source_domain: yeswehack.com
source_url: "https://www.yeswehack.com/dojo/dojo-challenge-27-winners"
published_at: "2023-10-09T13:27:00Z"
tags: ["bug-bounty", "ctf", "xss", "dojo", "yeswehack", "writeup", "filter-bypass"]
phying_url: "https://phying.com/item/4869"
lang: en
---

# DOJO Challenge #27 Winners!

## Summary

Winners of Dojo challenge #27, 'WhazzUP': bypassing input validation for XSS by abusing JavaScript's toUpperCase(); best writeups by Podalirius, GrootMe and M4ke.

## Intelligence Metadata

- **Sources:** yeswehack.com
- **Published:** 2023-10-09T13:27:00Z
- **Original:** https://www.yeswehack.com/dojo/dojo-challenge-27-winners
- **Phying News:** https://phying.com/item/4869