Shazzer logo

Characters appended at the end of PORT within URL, which yield a different HOST

Chrome logo 1
Firefox logo 1
Edge logo 1

Characters appended at the end of PORT within URL, which yield a different HOST This is just a simple modification of another fuzzing vector by hansmachine

reindaelman
Created byreindaelman
Created Jun 15, 2025
Updated Jun 15, 2025

Tweet
Detecting browser...
CategoryURL Handling
VisibilityPublic
TypeJS
CharsetUTF-8
Template used:
if (new URL("https://google.com:1$[chr]$[chr]/endpoint").hostname!="google.com"){log($[i])}

Sample payloads

if (new URL("https://google.com:10x000x00/endpoint").hostname!="google.com"){alert(0)}
if (new URL("https://google.com:10x090x09/endpoint").hostname!="google.com"){alert(9)}
if (new URL("https://google.com:1##/endpoint").hostname!="google.com"){alert(35)}
if (new URL("https://google.com:1///endpoint").hostname!="google.com"){alert(47)}
if (new URL("https://google.com:100/endpoint").hostname!="google.com"){alert(48)}
if (new URL("https://google.com:111/endpoint").hostname!="google.com"){alert(49)}
if (new URL("https://google.com:122/endpoint").hostname!="google.com"){alert(50)}
if (new URL("https://google.com:133/endpoint").hostname!="google.com"){alert(51)}
if (new URL("https://google.com:144/endpoint").hostname!="google.com"){alert(52)}
if (new URL("https://google.com:155/endpoint").hostname!="google.com"){alert(53)}
if (new URL("https://google.com:166/endpoint").hostname!="google.com"){alert(54)}
if (new URL("https://google.com:177/endpoint").hostname!="google.com"){alert(55)}
if (new URL("https://google.com:188/endpoint").hostname!="google.com"){alert(56)}
if (new URL("https://google.com:199/endpoint").hostname!="google.com"){alert(57)}
if (new URL("https://google.com:1??/endpoint").hostname!="google.com"){alert(63)}
if (new URL("https://google.com:1\\/endpoint").hostname!="google.com"){alert(92)}

Fuzz results

Chrome logo
Chrome 144.0.0.0 desktop macOS 10.15.7

Updated

Sun Jan 25 2026
Found 1 result
Loading...
Chrome logo
Chrome 137.0.0.0 desktop macOS 10.15.7older version

Updated

Sun Jun 15 2025
Found 15 results
Loading...
Firefox logo
Firefox 147.0 desktop macOS 10.15

Updated

Sun Jan 25 2026
Found 1 result
Loading...
Edge logo
Microsoft Edge 144.0.0.0 desktop Windows NT 10.0

Updated

Mon Jan 26 2026
Found 1 result
Loading...