diff --git a/pkg/repo/v1/index.go b/pkg/repo/v1/index.go
index 1ed7c32b6..f9829ec7f 100644
--- a/pkg/repo/v1/index.go
+++ b/pkg/repo/v1/index.go
@@ -178,7 +178,14 @@ func (i IndexFile) SortEntries() {
 // isVersionRange checks if the version string is a range constraint (e.g., "^1", "~1.10")
 // rather than an exact version (e.g., "1.10.0").
 func isVersionRange(version string) bool {
-	return strings.ContainsAny(version, "^~<>=!*xX") || strings.Contains(version, "||") || strings.Contains(version, " - ")
+	if strings.ContainsAny(version, "^~<>=!*") || strings.Contains(version, "||") || strings.Contains(version, " - ") {
+		return true
+	}
+	core := version
+	if idx := strings.IndexAny(version, "-+"); idx != -1 {
+		core = version[:idx]
+	}
+	return strings.ContainsAny(core, "xX")
 }
 
 // Get returns the ChartVersion for the given name.
diff --git a/pkg/repo/v1/index_test.go b/pkg/repo/v1/index_test.go
index 7a3120c89..a86efe1e3 100644
--- a/pkg/repo/v1/index_test.go
+++ b/pkg/repo/v1/index_test.go
@@ -745,6 +745,10 @@ func TestIsVersionRange(t *testing.T) {
 		{"1.0.0 - 2.0.0", true},
 		{"^1.0.0 || ^2.0.0", true},
 		{">=1.0.0 <2.0.0", true},
+		// Exact versions with 'x'/'X' in prerelease or build metadata
+		{"1.0.0-fix", false},
+		{"2.0.0-next", false},
+		{"1.0.0+exp", false},
 	}
 
 	for _, tt := range tests {