Confusing...

CSS class name separators

This vector shows what each class name can be separated with.

Shazzer Master

Created byhackvertor

Created Aug 6, 2026

Updated Sep 5, 2026

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CategoryCSS Parsing

VisibilityPublic

TypeXSS

CharsetUTF-8

Template used:

<style>
.x{color:red;}
</style>
<div id=x class="x$[chr]y">test</div>

Code used after fuzz:

window.getComputedStyle(x).color === 'rgb(255, 0, 0)' && log($[i])

Sample payloads

<style>
.x{color:red;}
</style>
<div id=x class="x0x09y">test</div>

<style>
.x{color:red;}
</style>
<div id=x class="x
y">test</div>

<style>
.x{color:red;}
</style>
<div id=x class="x0x0Cy">test</div>

<style>
.x{color:red;}
</style>
<div id=x class="x
y">test</div>

<style>
.x{color:red;}
</style>
<div id=x class="x y">test</div>

<style>
.x{color:red;}
</style>
<div id=x class="x"y">test</div>