Characters that can break out of a single line comment
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4This vector shows what characters can be used to break out of a single line comment and execute Javascript
Created by0x999-x
Created Apr 10, 2024
Updated May 11, 2025
Detecting browser...
CategoryXSS Execution
VisibilityPublic
TypeJS
CharsetUTF-8
Template used:
// $[chr]log($[i])Sample payloads
//
alert(10)// 0x0Dalert(13)//
alert(8232)//
alert(8233)Fuzz results
Chrome 145.0.0.0 desktop Windows NT 10.0
Updated18 Feb 2026
Found 4 results
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Chrome 144.0.0.0 desktop macOS 10.15.7older version
Updated18 Feb 2026
Found 4 results
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Chrome 123.0.0.0 Unknown Unknownolder version
Updated10 Apr 2024
Found 4 results
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Firefox 148.0 desktop Windows NT 10.0
Updated23 Feb 2026
Found 4 results
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Firefox 147.0 desktop Linuxolder version
Updated1 Feb 2026
Found 4 results
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Firefox 140.0 desktop macOS 10.15older version
Updated17 Jul 2025
Found 4 results
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Firefox 124.0 Unknown Unknownolder version
Updated10 Apr 2024
Found 4 results
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Microsoft Edge 145.0.0.0 desktop Windows NT 10.0
Updated18 Feb 2026
Found 4 results
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Safari 18.5 desktop macOS 10.15.7
Updated17 Jul 2025
Found 4 results
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