# UNDF: UNDF-2026-000000958
--- a/source/simulation2/components/CCmpTemplateManager.cpp
+++ b/source/simulation2/components/CCmpTemplateManager.cpp
@@ -1,5 +1,6 @@
 // CWE-407: CCmpTemplateManager::FindUsedTemplates uses std::find on a growing
 // std::vector for dedup, O(T^2) where T = number of entity-template pairs.
 // With T=2000 entities this is 2M comparisons. Fix: use std::unordered_set.
+#include <unordered_set>

@@ -237,10 +238,10 @@
 std::vector<std::string> CCmpTemplateManager::FindUsedTemplates() const
 {
-	std::vector<std::string> usedTemplates;
+	std::unordered_set<std::string> seen;
 	for (const std::pair<const entity_id_t, std::string>& p : m_LatestTemplates)
-		if (std::find(usedTemplates.begin(), usedTemplates.end(), p.second) == usedTemplates.end())
-			usedTemplates.push_back(p.second);
-	return usedTemplates;
+		seen.insert(p.second);
+	return std::vector<std::string>(seen.begin(), seen.end());
 }