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Regular Expressions
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All Vectors
Vector name
User
Created
Type
Likes
300
300
300
300
Characters allowed before host name that are ignored
hackvertor
6/11/2025
XSS
0
⚠ Browser differences
24
16
24
Difference between browser-supported handlers and Shazzer 'events' list
hansmach1ne
1/5/2025
JS
0
1
1
1
1
Characters appended at the end of PORT within URL, which yield a different HOST
reindaelman
6/15/2025
JS
0
5
5
5
5
Characters allowed before @import
hackvertor
8/6/2026
JS
0
1
1
1
1
Characters before custom tag
s3np41k1r1t0
6/23/2025
XSS
0
1.1M
1.1M
1.1M
1.1M
Characters matching URLPattern capture group
JorianWoltjer
4/6/2026
JS
0
25
25
25
25
Characters allowed before optional chaining
hackvertor
5/4/2024
JS
0
5
5
5
5
Characters allowed before url function with @import
hackvertor
8/6/2026
JS
0
16
16
16
16
JavaScript separators between function names
InsertScript
4/2/2024
JS
0
4
4
4
4
Characters that can break out of a single line comment
0x999-x
4/10/2024
JS
0
31
31
31
31
Characters allowed either side of a variable assignment
hackvertor
7/18/2025
JS
0
1
1
1
1
Characters cause self closing tag
hackvertor
7/23/2025
XSS
0
✓
✓
✓
✓
CSS container queries
hackvertor
7/4/2026
FEATURE
0
✓
✓
✓
✓
CSS :is() selector
hackvertor
7/4/2026
FEATURE
0
149.2k
149.2k
149.2k
149.2k
Characters that are valid JS part variables
hackvertor
6/9/2026
JS
0
⚠ Browser differences
51
1
51
1
Invalid selector characters with a prefix of x
hackvertor
8/6/2026
XSS
0
1.1M
1.1M
1.1M
1.1M
Characters allowed as CSS variable names
hackvertor
8/6/2026
XSS
0
300
300
300
300
Valid characters before domain 1
avlidienbrunn
4/10/2024
XSS
0
1
1
1
1
XSS vectors that execute automatically inside math
hackvertor
4/17/2024
XSS
0
10
10
10
10
Entities that are normalized for e
hackvertor
7/12/2024
JS
0
Found
318
records
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