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HTML-Encoded Attribute Escape

Chrome logo 1
Firefox logo 1
Edge logo 1

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

IDKdir
Created byIDKdir
Created Jul 13, 2024
Updated May 27, 2025

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CategoryDOM Behavior
VisibilityPublic
TypeXSS
CharsetUTF-8
Template used:
<img src="/image.png" tag="html($[chr])><iframe><!--">
Code used after fuzz:
if (document.querySelector('iframe')) {0x0D
    log($[chr]);0x0D
}

Fuzz results

Chrome logo
Chrome 148.0.0.0 desktop Windows NT 10.0
Updated15 Mar 2026
Found 1 result
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Firefox logo
Firefox 149.0 desktop macOS 10.15
Updated3 Apr 2026
Found 1 result
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Edge logo
Microsoft Edge 146.0.0.0 desktop Windows NT 10.0
Updated6 Apr 2026
Found 1 result
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