Merge pull request #281 from STIXProject/issue276

Fix for issue #276

stix/exploit_target/vulnerability.py

@@ -188,6 +188,29 @@ def discovered_datetime(self, value):
         """
         self._set_var(DateTimeWithPrecision, discovered_datetime=value)
 
+    @property
+    def published_datetime(self):
+        """
+        Returns:
+            The time this vulnerability was published, represented as
+            class:`DateTimeWithPrecision`
+        """
+        return self._published_datetime
+
+    @published_datetime.setter
+    def published_datetime(self, value):
+        """
+        Sets the time this vulnerability was published, represented as
+        class:`DateTimeWithPrecision`
+
+        Default Value: ``None``
+
+        Returns:
+            None
+
+        """
+        self._set_var(DateTimeWithPrecision, published_datetime=value)
+
     @property
     def references(self):
         return self._references