Characters allowed before image-set function

This vector shows what characters are allowed before the image-set() function with a nested url() function.

Shazzer Master

Created Aug 6, 2026

Updated Aug 6, 2026

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CategoryCSS Parsing

VisibilityPublic

TypeXSS

CharsetUTF-8

Template used:

<div style=background:$[chr]image-set(url(https://fuzz.shazzer.co.uk/$[rand]?$[i]#))>

Sample payloads

<div style=background:\image-set(url(https://fuzz.shazzer.co.uk/q28rtwuw4an?92#))>

<div style=background:\image-set(url(https://fuzz.shazzer.co.uk/pglh2n4ohb?92#))>

<div style=background:\image-set(url(https://fuzz.shazzer.co.uk/9h6vl9ccikq?92#))>

<div style=background:\image-set(url(https://fuzz.shazzer.co.uk/3xxzgsw3f0r?92#))>