unicodeOverflow

This creates a unicode overflow that is described in my research: https://portswigger.net/research/splitting-the-email-atom

Created by: hackvertor

Installed 1 times

Viewed: 931

Category: Email

Created on: Saturday, September 14, 2024 at 11:39:26 PM

Updated on: Wednesday, September 10, 2025 at 7:53:19 PM

This is a built in tag

Tag arguments

[
   {
      "type": "number",
      "help": "This specifies a mask to use to create the overflow. Mask is simply a number that when combined with the character creates an overflow.",
      "defaultValue": "0x100"
   }
]

Code

class unicodeOverflow {
  encode(input, mask) {
      return input.split('').map(chr =>
         String.fromCodePoint(mask + chr.codePointAt())).join('');
  }
}