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Characters allowed before @import

This vector shows which characters are allowed before an @import statement. It uses the new URL fuzzing functionality in Shazzer.

Shazzer Master

Created byhackvertor

Created Aug 6, 2026

Updated Aug 6, 2026

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CategoryCSS Parsing

VisibilityPublic

TypeJS

CharsetUTF-8

Template used:

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint($[i])+'@import url("https://fuzz.shazzer.co.uk/$[rand]?$[i]");';0x0D
document.head.appendChild(style);

Sample payloads

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(9)+'@import url("https://fuzz.shazzer.co.uk/gimun5p7kbg?9");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(10)+'@import url("https://fuzz.shazzer.co.uk/6wux28mhng4?10");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(12)+'@import url("https://fuzz.shazzer.co.uk/ncm6q9gzlm?12");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(13)+'@import url("https://fuzz.shazzer.co.uk/b19890xrot?13");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(32)+'@import url("https://fuzz.shazzer.co.uk/n8vdxtuzf1b?32");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(9)+'@import url("https://fuzz.shazzer.co.uk/nvzyqjfemac?9");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(10)+'@import url("https://fuzz.shazzer.co.uk/imsam2tjpll?10");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(12)+'@import url("https://fuzz.shazzer.co.uk/c2pp4lqnxi?12");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(13)+'@import url("https://fuzz.shazzer.co.uk/c85i38j91j5?13");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(32)+'@import url("https://fuzz.shazzer.co.uk/va0gp4fof7?32");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(9)+'@import url("https://fuzz.shazzer.co.uk/155nnsueucg?9");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(10)+'@import url("https://fuzz.shazzer.co.uk/9uwah4kgxn9?10");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(12)+'@import url("https://fuzz.shazzer.co.uk/k0sicolzaxb?12");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(13)+'@import url("https://fuzz.shazzer.co.uk/pykmkvqq44?13");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(32)+'@import url("https://fuzz.shazzer.co.uk/anizidwbnx?32");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(9)+'@import url("https://fuzz.shazzer.co.uk/4cu4u75esmx?9");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(10)+'@import url("https://fuzz.shazzer.co.uk/6xw9cwu5r7?10");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(12)+'@import url("https://fuzz.shazzer.co.uk/uz6xardztiq?12");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(13)+'@import url("https://fuzz.shazzer.co.uk/pbg85vbhenk?13");';0x0D
document.head.appendChild(style);

const style = document.createElement("style");0x0D
style.textContent = String.fromCodePoint(32)+'@import url("https://fuzz.shazzer.co.uk/ll7nnuxoomj?32");';0x0D
document.head.appendChild(style);