Fix/issue 1550 UUID case insensitive - #1551
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nodivbyzero merged 2 commits intoApr 6, 2026
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## Fixes Or Enhances Resolves go-playground#1550 The `uUIDRegexString` regex only matched lowercase hex digits (a-f), causing valid UUIDs containing uppercase letters (e.g., `2830923A-E5F5-4178-9700-787586673E0D`) to fail validation. UUIDs are case-insensitive per RFC 4122, so both cases should be accepted. - Updated `uUIDRegexString` to accept both uppercase and lowercase hex characters (a-fA-F), aligning it with the behaviour of `uUIDRFC4122RegexString`. - Added a test to cover UUID validation with uppercase hex digits. - Manually tested against the example in the issue and the expected behaviour is now observed. **Make sure that you've checked the boxes below before you submit PR:** - [x] Tests exist or have been written that cover this particular change. @go-playground/validator-maintainers
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Fixes Or Enhances
Resolves #1550
The
uUIDRegexStringregex only matched lowercase hex digits (a-f), causing valid UUIDs containing uppercase letters (e.g.,2830923A-E5F5-4178-9700-787586673E0D) to fail validation. UUIDs are case-insensitive per RFC 4122, so both cases should be accepted.uUIDRegexStringto accept both uppercase and lowercase hex characters (a-fA-F), aligning it with the behaviour ofuUIDRFC4122RegexString.Make sure that you've checked the boxes below before you submit PR:
@go-playground/validator-maintainers