Characters transformed when using uppercase

This vector demonstrates which codePoints transform to ascii characters when using toUpperCase() Related vector: https://shazzer.co.uk/vectors/661713f26438aee019a61a71

Created byhackvertor

Created Nov 18, 2024

Updated May 27, 2025

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CategoryXSS Execution

VisibilityPublic

TypeJS

CharsetUTF-8

Template used:

let transformedChr = String.fromCodePoint($[i]).toUpperCase();0x0D
$[i] > 0x7f &&0x0D
/^\w+$/.test(transformedChr) &&0x0D
log($[i] + '=>' + transformedChr)

Sample payloads

let transformedChr = String.fromCodePoint(0).toUpperCase();0x0D
0 > 0x7f &&0x0D
/^\w+$/.test(transformedChr) &&0x0D
alert(0 + '=>' + transformedChr)

Characters transformed when using uppercase

Sample payloads

Fuzz results

Distributed Fuzzing