diff --git a/src/main/java/com/lions/dev/exception/UnauthorizedException.java b/src/main/java/com/lions/dev/exception/UnauthorizedException.java
new file mode 100644
index 0000000..ed97399
--- /dev/null
+++ b/src/main/java/com/lions/dev/exception/UnauthorizedException.java
@@ -0,0 +1,20 @@
+package com.lions.dev.exception;
+
+/**
+ * Exception levée lorsqu'un utilisateur n'a pas les autorisations nécessaires
+ * pour effectuer une action.
+ */
+public class UnauthorizedException extends RuntimeException {
+
+    public UnauthorizedException() {
+        super("Access denied");
+    }
+
+    public UnauthorizedException(String message) {
+        super(message);
+    }
+
+    public UnauthorizedException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}