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bench/reachability-benchmark/cases/java/micronaut-deserialize/src/Controller.java

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+package bench.reachability.micronaut;
+
+import java.util.Map;
+import java.util.Base64;
+import java.io.*;
+
+public class Controller {
+    // Unsafe deserialization sink (reachable)
+    public static Response handleUpload(Map<String, String> body) {
+        String payload = body.get("payload");
+        if (payload == null) {
+            return new Response(400, "bad request");
+        }
+        try (ObjectInputStream ois = new ObjectInputStream(
+                new ByteArrayInputStream(Base64.getDecoder().decode(payload)))) {
+            Object obj = ois.readObject();
+            return new Response(200, obj.toString());
+        } catch (Exception ex) {
+            return new Response(500, ex.getClass().getSimpleName());
+        }
+    }
+
+    public record Response(int status, String body) {}
+}