Entities still parsed in uppercase

This vector transforms each entity into uppercase and checks if it is still rendered.

Created byhackvertor

Created Jul 2, 2024

Updated May 27, 2025

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CategoryEntity Parsing

VisibilityPublic

TypeJS

CharsetUTF-8

$[data1] placeholderhtml_entities

Code used before fuzz:

const div = document.createElement('div');

Template used:

let entity = '$[data1]'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '$[data1]') {0x0D
   log(entity);0x0D
}

Sample payloads

let entity = '&AMP;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&AMP;') {0x0D
   alert(entity);0x0D
}

let entity = '&COPY;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&COPY;') {0x0D
   alert(entity);0x0D
}

let entity = '&COPYSR;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&COPYSR;') {0x0D
   alert(entity);0x0D
}

let entity = '&DD;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&DD;') {0x0D
   alert(entity);0x0D
}

let entity = '&ENG;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&ENG;') {0x0D
   alert(entity);0x0D
}

let entity = '&ETH;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&ETH;') {0x0D
   alert(entity);0x0D
}

let entity = '&GTCC;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GTCC;') {0x0D
   alert(entity);0x0D
}

let entity = '&GTCIR;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GTCIR;') {0x0D
   alert(entity);0x0D
}

let entity = '&GT;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GT;') {0x0D
   alert(entity);0x0D
}

let entity = '&GTDOT;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GTDOT;') {0x0D
   alert(entity);0x0D
}

let entity = '&GTLPAR;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GTLPAR;') {0x0D
   alert(entity);0x0D
}

let entity = '&GTQUEST;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GTQUEST;') {0x0D
   alert(entity);0x0D
}

let entity = '&GTRAPPROX;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GTRAPPROX;') {0x0D
   alert(entity);0x0D
}

let entity = '&GTRARR;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GTRARR;') {0x0D
   alert(entity);0x0D
}

let entity = '&GTRDOT;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GTRDOT;') {0x0D
   alert(entity);0x0D
}

let entity = '&GTREQLESS;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GTREQLESS;') {0x0D
   alert(entity);0x0D
}

let entity = '&GTREQQLESS;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GTREQQLESS;') {0x0D
   alert(entity);0x0D
}

let entity = '&GTRLESS;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GTRLESS;') {0x0D
   alert(entity);0x0D
}

let entity = '&GTRSIM;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&GTRSIM;') {0x0D
   alert(entity);0x0D
}

let entity = '&LTCC;'.toUpperCase();0x0D
div.innerHTML= entity;0x0D
if(!div.innerText.includes(entity) && entity !== '&LTCC;') {0x0D
   alert(entity);0x0D
}

Entities still parsed in uppercase

Sample payloads

Fuzz results

Distributed Fuzzing