HTML-Encoded Attribute Escape

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Checks for any escaping from the img tag attribute from encoded input without using double quotes

Created on: Saturday, July 13, 2024 at 4:56:45 PM

Updated on: Tuesday, May 27, 2025 at 8:15:32 AM

Category: DOM Behavior

Vector visibility: Public

Vector type: XSS

Vector charset: UTF-8

<img src="/image.png" tag="html($[chr])><iframe><!--">

if (document.querySelector('iframe')) {0x0D
    log($[chr]);0x0D
}