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Tags that remove the span or are self closing

⚠ Browser differences
Chrome logo 16
Firefox logo 17
Edge logo 16
Safari logo 17

This checks if a tag removes the span or doesn't contain it.

hackvertor
Created byhackvertor
Created Jul 16, 2024
Updated May 27, 2025

Tweet
Detecting browser...
CategoryHTML Parsing
VisibilityPublic
TypeXSS
CharsetUTF-8
$[data1] placeholderhtml
Template used:
<$[data1] id=x><span></span></$[data1]>
Code used after fuzz:
!x.innerHTML.includes('<span>')  && log('$[data1]')

Sample payloads

<area id=x><span></span></area>
<base id=x><span></span></base>
<br id=x><span></span></br>
<embed id=x><span></span></embed>
<hr id=x><span></span></hr>
<img id=x><span></span></img>
<input id=x><span></span></input>
<link id=x><span></span></link>
<meta id=x><span></span></meta>
<param id=x><span></span></param>
<select id=x><span></span></select>
<source id=x><span></span></source>
<table id=x><span></span></table>
<textarea id=x><span></span></textarea>
<title id=x><span></span></title>
<track id=x><span></span></track>
<wbr id=x><span></span></wbr>

Fuzz results

Chrome logo
Chrome 145.0.0.0 desktop Windows NT 10.0
Updated17 Feb 2026
Found 16 results
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Chrome logo
Chrome 144.0.0.0 desktop Linuxolder version
Updated31 Jan 2026
Found 16 results
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Chrome logo
Chrome 144.0.0.0 desktop macOS 10.15.7older version
Updated17 Feb 2026
Found 16 results
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Firefox logo
Firefox 148.0 desktop Windows NT 10.0
Updated23 Feb 2026
Found 17 results
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Firefox logo
Firefox 147.0 desktop Linuxolder version
Updated1 Feb 2026
Found 17 results
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Firefox logo
Firefox 128.0 desktop macOS 10.15older version
Updated16 Jul 2024
Found 17 results
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Edge logo
Microsoft Edge 145.0.0.0 desktop Windows NT 10.0
Updated18 Feb 2026
Found 16 results
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Safari logo
Safari 17.4 desktop macOS 10.15.7
Updated16 Jul 2024
Found 17 results
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