From c530a7f61841fcc53364a26c2ec66ad1fa024eed Mon Sep 17 00:00:00 2001
From: Vitaliy <160263432+vitalivo@users.noreply.github.com>
Date: Sat, 12 Sep 2026 16:24:57 +0300
Subject: [PATCH] Validate unsigned integer strings across the uint64 range

---
 internal/validators/type_check.go |  2 +-
 validators_test.go                | 14 ++++++++++++++
 validators_type.go                |  2 +-
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/internal/validators/type_check.go b/internal/validators/type_check.go
index 44c4b29..47464e3 100644
--- a/internal/validators/type_check.go
+++ b/internal/validators/type_check.go
@@ -36,7 +36,7 @@ func IsUint(fl *fieldval.FieldValue) bool {
 	case uint, uint8, uint16, uint32, uint64:
 		return true
 	case string:
-		_, err := strconv.ParseUint(typVal, 10, 32)
+		_, err := strconv.ParseUint(typVal, 10, 64)
 		return err == nil
 	}
 	return false
diff --git a/validators_test.go b/validators_test.go
index ff6a427..a616fa2 100644
--- a/validators_test.go
+++ b/validators_test.go
@@ -758,3 +758,17 @@ func TestDateCheck(t *testing.T) {
 	is.False(AfterOrEqualDate("invalid", "2018-10-26"))
 	is.False(AfterOrEqualDate("2018-10-25", "invalid"))
 }
+
+func TestIsUintFullRange(t *testing.T) {
+	for _, value := range []string{"4294967295", "4294967296", "18446744073709551615"} {
+		t.Run(value, func(t *testing.T) {
+			assert.True(t, IsUint(value))
+			v := Map(map[string]any{"number": value})
+			v.StringRule("number", "uint")
+			assert.True(t, v.Validate())
+		})
+	}
+	for _, value := range []string{"-1", "18446744073709551616", "1.5", ""} {
+		assert.False(t, IsUint(value))
+	}
+}
diff --git a/validators_type.go b/validators_type.go
index d58f009..e5ca3d1 100644
--- a/validators_type.go
+++ b/validators_type.go
@@ -30,7 +30,7 @@ func IsUint(val any) bool {
 	case uint, uint8, uint16, uint32, uint64:
 		return true
 	case string:
-		_, err := strconv.ParseUint(typVal, 10, 32)
+		_, err := strconv.ParseUint(typVal, 10, 64)
 		return err == nil
 	}
 	return false