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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 Sep 5, 2026

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CategoryCSS Parsing

VisibilityPublic

TypeJS

CharsetUTF-8

Template used:

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

Sample payloads

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

const style = document.createElement("style");
style.textContent = String.fromCodePoint(10)+'@import url("https://fuzz.shazzer.co.uk/uya9vrk5j2p?10");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(12)+'@import url("https://fuzz.shazzer.co.uk/mrgowrmpb0e?12");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(13)+'@import url("https://fuzz.shazzer.co.uk/sm56qergqq?13");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(32)+'@import url("https://fuzz.shazzer.co.uk/7tscywznez5?32");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(9)+'@import url("https://fuzz.shazzer.co.uk/h78fggkjvm?9");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(10)+'@import url("https://fuzz.shazzer.co.uk/r5x0k4qhmt?10");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(12)+'@import url("https://fuzz.shazzer.co.uk/96nnq5hi3b?12");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(13)+'@import url("https://fuzz.shazzer.co.uk/rwsczc2vnh?13");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(32)+'@import url("https://fuzz.shazzer.co.uk/9wgb6se3ews?32");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(9)+'@import url("https://fuzz.shazzer.co.uk/1tce0x3zw3e?9");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(10)+'@import url("https://fuzz.shazzer.co.uk/03rkd1qlf5ir?10");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(12)+'@import url("https://fuzz.shazzer.co.uk/dmijvv4elp?12");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(13)+'@import url("https://fuzz.shazzer.co.uk/1rlig3tt2wd?13");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(32)+'@import url("https://fuzz.shazzer.co.uk/oyzl90s9w8?32");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(9)+'@import url("https://fuzz.shazzer.co.uk/p16ahfyuxn?9");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(10)+'@import url("https://fuzz.shazzer.co.uk/gkykvx8ug2m?10");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(12)+'@import url("https://fuzz.shazzer.co.uk/7jvb6t0wxvg?12");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(13)+'@import url("https://fuzz.shazzer.co.uk/sjo8or7wxn?13");';
document.head.appendChild(style);

const style = document.createElement("style");
style.textContent = String.fromCodePoint(32)+'@import url("https://fuzz.shazzer.co.uk/3gkzvyuawyl?32");';
document.head.appendChild(style);