diff --git a/web/gui/src/main/webapp/app/view/app/app.js b/web/gui/src/main/webapp/app/view/app/app.js
index 131c56f..a71cb2d 100644
--- a/web/gui/src/main/webapp/app/view/app/app.js
+++ b/web/gui/src/main/webapp/app/view/app/app.js
@@ -126,7 +126,7 @@
         bottom = container.append('div').classed('bottom', true);
 
         function nTable(hdr, cls) {
-            bottom.append('h2').html(hdr);
+            bottom.append('h2').text(hdr);
             bottom.append('div').classed(cls, true).append('table');
         }
 
@@ -139,7 +139,7 @@
         var tr = tbody.append('tr');
 
         function addCell(cls, txt) {
-            tr.append('td').attr('class', cls).html(txt);
+            tr.append('td').attr('class', cls).text(txt);
         }
 
         addCell('label', friendlyProps[index] + ':');
@@ -147,6 +147,7 @@
     }
 
     function urlize(u) {
+        u = fs.sanitize(u);
         return '<a href="' + u + '" target="_blank">' + u + '</a>';
     }
 
@@ -182,7 +183,7 @@
                 tbody = table.append('tbody');
 
             items.forEach(function (item) {
-                tbody.append('tr').append('td').html(item);
+                tbody.append('tr').append('td').text(item);
             });
         }
 
@@ -289,7 +290,8 @@
             var content = ds.createDiv();
             content.append('p').text(fs.cap(action) + ' ' + itemId);
             if (strongWarning[itemId]) {
-                content.append('p').html(discouragement).classed('strong', true);
+                content.append('p').html(fs.sanitize(discouragement))
+                    .classed('strong', true);
             }
             return content;
         }
diff --git a/web/gui/src/main/webapp/app/view/cluster/cluster.js b/web/gui/src/main/webapp/app/view/cluster/cluster.js
index 887b943..451a067 100644
--- a/web/gui/src/main/webapp/app/view/cluster/cluster.js
+++ b/web/gui/src/main/webapp/app/view/cluster/cluster.js
@@ -98,7 +98,7 @@
         top.append('hr');
 
         bottom = container.append('div').classed('bottom', true);
-        bottom.append('h2').classed('devices-title', true).html('Devices');
+        bottom.append('h2').classed('devices-title', true).text('Devices');
         bottom.append('table');
         //ToDo add more details
     }
@@ -107,7 +107,7 @@
         var tr = tbody.append('tr');
 
         function addCell(cls, txt) {
-            tr.append('td').attr('class', cls).html(txt);
+            tr.append('td').attr('class', cls).text(txt);
         }
         addCell('label', friendlyProps[index] + ' :');
         addCell('value', value);
@@ -115,7 +115,7 @@
 
     function populateTop(details) {
         is.loadEmbeddedIcon(iconDiv, 'node', 40);
-        top.select('h2').html(details.id);
+        top.select('h2').text(details.id);
 
         var tbody = topTable.append('tbody');
 
@@ -128,7 +128,7 @@
         var tr = tbody.append('tr');
 
         deviceCols.forEach(function (col) {
-            tr.append('td').html(device[col]);
+            tr.append('td').text(device[col]);
         });
     }
 
@@ -139,7 +139,7 @@
             tbWidth, tbHeight;
 
         friendlyDeviceCols.forEach(function (col) {
-            theader.append('th').html(col);
+            theader.append('th').text(col);
         });
         devices.forEach(function (device) {
             addDeviceRow(tbody, device);
diff --git a/web/gui/src/main/webapp/app/view/device/device.js b/web/gui/src/main/webapp/app/view/device/device.js
index 303e425..f7ec45b 100644
--- a/web/gui/src/main/webapp/app/view/device/device.js
+++ b/web/gui/src/main/webapp/app/view/device/device.js
@@ -78,7 +78,7 @@
     }
 
     function exitEditMode(nameH2, name) {
-        nameH2.html(name);
+        nameH2.text(name);
         nameH2.classed('editable clickable', true);
         editingName = false;
         ks.enableGlobalKeys(true);
@@ -114,7 +114,7 @@
 
         if (!editingName) {
             nameH2.classed('editable clickable', false);
-            nameH2.html('');
+            nameH2.text('');
             tf = nameH2.append('input').classed('name-input', true)
                 .attr('type', 'text')
                 .attr('value', $scope.panelData.name);
@@ -149,7 +149,7 @@
         top.append('hr');
 
         bottom = container.append('div').classed('bottom', true);
-        bottom.append('h2').classed('ports-title', true).html('Ports');
+        bottom.append('h2').classed('ports-title', true).text('Ports');
         bottom.append('table');
     }
 
@@ -157,7 +157,7 @@
         var tr = tbody.append('tr');
 
         function addCell(cls, txt) {
-            tr.append('td').attr('class', cls).html(txt);
+            tr.append('td').attr('class', cls).text(txt);
         }
         addCell('label', friendlyProps[index] + ' :');
         addCell('value', value);
@@ -172,7 +172,7 @@
                         .append('tbody');
 
         is.loadEmbeddedIcon(iconDiv, details._iconid_type, 40);
-        top.select('h2').html(details.name);
+        top.select('h2').text(details.name);
 
         // === demonstrate use of JsonCodec object see ONOS-5976
         addProp(leftTbl,  0, device.id);
@@ -195,7 +195,7 @@
         var tr = tbody.append('tr');
 
         portCols.forEach(function (col) {
-            tr.append('td').html(port[col]);
+            tr.append('td').text(port[col]);
         });
     }
 
@@ -205,7 +205,7 @@
             tbWidth, tbHeight;
 
         friendlyPortCols.forEach(function (col) {
-            theader.append('th').html(col);
+            theader.append('th').text(col);
         });
         ports.forEach(function (port) {
             addPortRow(tbody, port);
@@ -253,7 +253,7 @@
     function respNameCb(data) {
         if (data.warn) {
             $log.warn(data.warn, data.id);
-            top.select('h2').html(data.id);
+            top.select('h2').text(data.id);
         }
     }
 
diff --git a/web/gui/src/main/webapp/app/view/flow/flow.js b/web/gui/src/main/webapp/app/view/flow/flow.js
index 1d2ceaa..a48c63e 100644
--- a/web/gui/src/main/webapp/app/view/flow/flow.js
+++ b/web/gui/src/main/webapp/app/view/flow/flow.js
@@ -94,11 +94,11 @@
         topTable = top.append('div').classed('top-content', true)
             .append('table');
         top.append('hr');
-        trmtDiv.append('h2').html('Treatment');
+        trmtDiv.append('h2').text('Treatment');
         topTrmtTable = trmtDiv.append('div').classed('top-content', true)
             .append('table');
         trmtDiv.append('hr');
-        selDiv.append('h2').html('Selector');
+        selDiv.append('h2').text('Selector');
         topSelTable = selDiv.append('div').classed('top-content', true)
             .append('table');
 
@@ -110,7 +110,7 @@
         var tr = tbody.append('tr');
 
         function addCell(cls, txt) {
-            tr.append('td').attr('class', cls).html(txt);
+            tr.append('td').attr('class', cls).text(txt);
         }
         addCell('label', friendlyProps[index] + ' :');
         addCell('value', value);
@@ -120,7 +120,7 @@
         var tr = tbody.append('tr');
 
         function addCell(cls, txt) {
-            tr.append('td').attr('class', cls).html(txt);
+            tr.append('td').attr('class', cls).text(txt);
         }
         addCell('label', label + ' :');
         addCell('value', value);
@@ -128,7 +128,7 @@
 
     function populateTop(details) {
         is.loadEmbeddedIcon(iconDiv, 'flowTable', 40);
-        top.select('h2').html(details.flowId);
+        top.select('h2').text(details.flowId);
 
         var tbody = topTable.append('tbody');
 
diff --git a/web/gui/src/main/webapp/app/view/settings/settings.js b/web/gui/src/main/webapp/app/view/settings/settings.js
index e5a3eba..ce3caa1 100644
--- a/web/gui/src/main/webapp/app/view/settings/settings.js
+++ b/web/gui/src/main/webapp/app/view/settings/settings.js
@@ -102,7 +102,7 @@
         var tr = tbody.append('tr');
 
         function addCell(cls, txt) {
-            tr.append('td').attr('class', cls).html(txt);
+            tr.append('td').attr('class', cls).text(txt);
         }
 
         addCell('label', friendlyProps[index] + ':');
diff --git a/web/gui/src/main/webapp/app/view/topo/topoPanel.js b/web/gui/src/main/webapp/app/view/topo/topoPanel.js
index 32d3420..100cd96 100644
--- a/web/gui/src/main/webapp/app/view/topo/topoPanel.js
+++ b/web/gui/src/main/webapp/app/view/topo/topoPanel.js
@@ -167,7 +167,7 @@
         }
 
         function addCell(cls, txt) {
-            tr.append('td').attr('class', cls).html(txt);
+            tr.append('td').attr('class', cls).text(txt);
         }
         addCell('label', lab + ' :');
         addCell('value', value);
diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2DeviceDetailsPanel.js b/web/gui/src/main/webapp/app/view/topo2/topo2DeviceDetailsPanel.js
index 0a60da7..3cacf8b 100644
--- a/web/gui/src/main/webapp/app/view/topo2/topo2DeviceDetailsPanel.js
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2DeviceDetailsPanel.js
@@ -139,7 +139,7 @@
         }
 
         function addCell(cls, txt) {
-            tr.append('td').attr('class', cls).html(txt);
+            tr.append('td').attr('class', cls).text(txt);
         }
         addCell('label', lab + ' :');
         addCell('value', value);