# UNDF: UNDF-2026-000000068
--- a/exposed-core/src/main/kotlin/org/jetbrains/exposed/v1/core/Table.kt
+++ b/exposed-core/src/main/kotlin/org/jetbrains/exposed/v1/core/Table.kt
@@ -1682,8 +1682,10 @@ open class Table(
     private fun <T : Any> T.clone(replaceArgs: Map<KProperty1<T, *>, Any> = emptyMap()): T = javaClass.kotlin.run {
         val consParams = primaryConstructor!!.parameters
         val mutableProperties = memberProperties.filterIsInstance<KMutableProperty1<T, Any?>>()
+        // CWE-407 fix: pre-compute constructor parameter names as HashSet to avoid O(P×C) repeated List allocations
+        val consParamNames = consParams.mapTo(HashSet()) { it.name }
         val allValues = memberProperties
-            .filter { it in mutableProperties || it.name in consParams.map(KParameter::name) }
+            .filter { it in mutableProperties || it.name in consParamNames }
             .associate { it.name to (replaceArgs[it] ?: it.get(this@clone)) }
         primaryConstructor!!.callBy(consParams.associateWith { allValues[it.name] }).also { newInstance ->
             for (prop in mutableProperties) {