diff --git a/src/tsd/GraphHandler.java b/src/tsd/GraphHandler.java
index 8e065bfc81..bbb265cb0d 100644
--- a/src/tsd/GraphHandler.java
+++ b/src/tsd/GraphHandler.java
@@ -70,8 +70,9 @@ final class GraphHandler implements HttpRpc {
   private static final boolean IS_WINDOWS =
     System.getProperty("os.name", "").contains("Windows");
 
+  private static final String RANGE_COMPONENT = "\\\"?-?\\d*\\.?(\\d+)?([eE]-?\\d+)?\\\"?";
   private static Pattern RANGE_VALIDATOR = Pattern.compile(
-      "\\[\\\"?-?\\d+\\.?(\\d+)?([eE]-?\\d+)?\\\"?:\\\"?-?(\\d+\\.?\\d+?)?([eE]-?\\d+)?\\\"?\\]");
+      "\\["+RANGE_COMPONENT+":"+RANGE_COMPONENT+"]");
   private static Pattern LABEL_VALIDATOR = Pattern.compile("[a-zA-z0-9 \\-_]");
   private static Pattern KEY_VALIDATOR = Pattern.compile(
       "(out|left|top|center|right|horiz|box|bottom)?\\s?");
diff --git a/src/utils/Config.java b/src/utils/Config.java
index 723df36c7a..c534900aca 100644
--- a/src/utils/Config.java
+++ b/src/utils/Config.java
@@ -556,6 +556,7 @@ protected void setDefaults() {
     default_map.put("tsd.core.storage_exception_handler.enable", "false");
     default_map.put("tsd.core.uid.random_metrics", "false");
     default_map.put("tsd.core.bulk.allow_out_of_order_timestamps", "false");
+    default_map.put("tsd.gnuplot.options.allowlist", ";axis x1y2");
     default_map.put("tsd.query.filter.expansion_limit", "4096");
     default_map.put("tsd.query.skip_unresolved_tagvs", "false");
     default_map.put("tsd.query.allow_simultaneous_duplicates", "true");
diff --git a/test/tsd/TestGraphHandler.java b/test/tsd/TestGraphHandler.java
index 71311856fa..011ca631d6 100644
--- a/test/tsd/TestGraphHandler.java
+++ b/test/tsd/TestGraphHandler.java
@@ -26,6 +26,7 @@
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
+
 import static org.mockito.Matchers.anyString;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
@@ -65,13 +66,94 @@ public final class TestGraphHandler {
   }
   
   @Test  
-  public void setPlotParams() throws Exception {
+  public void setYRangeParams() throws Exception {
     Plot plot = mock(Plot.class);
     HttpQuery query = mock(HttpQuery.class);
     Map<String, List<String>> params = Maps.newHashMap();
     when(query.getQueryString()).thenReturn(params);
+
+    params.put("yrange", Lists.newArrayList("[0:1]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:0]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:42]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:-42]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:0.8]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:-0.8]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:42.4]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:-42.4]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:4e4]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:-4e4]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:4e-4]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:-4e-4]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:4.2e4]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[:-4.2e4]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[0:]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[5:]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[-5:]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[0.5:]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[-0.5:]"));
+    GraphHandler.setPlotParams(query, plot);
+
+    params.put("yrange", Lists.newArrayList("[10.5:]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[-10.5:]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[10e5:]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[-10e5:]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[10e-5:]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[-10e-5:]"));
+    GraphHandler.setPlotParams(query, plot);
+    
+    params.put("yrange", Lists.newArrayList("[10.1e-5:]"));
+    GraphHandler.setPlotParams(query, plot);
     
-    params.put("yrange", Lists.newArrayList("[0:42]"));
+    params.put("yrange", Lists.newArrayList("[-10.1e-5:]"));
     GraphHandler.setPlotParams(query, plot);
     
     params.put("yrange", Lists.newArrayList("[33:system('touch /tmp/poc.txt')]"));