diff --git a/xwiki-platform-core/xwiki-platform-search/xwiki-platform-search-ui/src/main/resources/XWiki/SearchSuggestSourceSheet.xml b/xwiki-platform-core/xwiki-platform-search/xwiki-platform-search-ui/src/main/resources/XWiki/SearchSuggestSourceSheet.xml
index c3f3d2195e92..19e46bdfbc96 100644
--- a/xwiki-platform-core/xwiki-platform-search/xwiki-platform-search-ui/src/main/resources/XWiki/SearchSuggestSourceSheet.xml
+++ b/xwiki-platform-core/xwiki-platform-search/xwiki-platform-search-ui/src/main/resources/XWiki/SearchSuggestSourceSheet.xml
@@ -70,7 +70,7 @@
     : #if ($editing)
         $doc.display($property.name, 'edit')
       #else
-        {{{$!object.getProperty($property.name).value}}}
+        $services.rendering.escape($!object.getProperty($property.name).value, 'xwiki/2.1')
       #end
   #end
 #end
diff --git a/xwiki-platform-core/xwiki-platform-search/xwiki-platform-search-ui/src/test/java/org/xwiki/search/ui/SearchSuggestSourceSheetPageTest.java b/xwiki-platform-core/xwiki-platform-search/xwiki-platform-search-ui/src/test/java/org/xwiki/search/ui/SearchSuggestSourceSheetPageTest.java
new file mode 100644
index 000000000000..1b4741c77fd3
--- /dev/null
+++ b/xwiki-platform-core/xwiki-platform-search/xwiki-platform-search-ui/src/test/java/org/xwiki/search/ui/SearchSuggestSourceSheetPageTest.java
@@ -0,0 +1,90 @@
+package org.xwiki.search.ui;
+
+import org.jsoup.nodes.Document;
+import org.jsoup.select.Elements;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.xwiki.model.reference.DocumentReference;
+import org.xwiki.rendering.RenderingScriptServiceComponentList;
+import org.xwiki.rendering.internal.configuration.DefaultRenderingConfigurationComponentList;
+import org.xwiki.test.annotation.ComponentList;
+import org.xwiki.test.page.HTML50ComponentList;
+import org.xwiki.test.page.PageTest;
+import org.xwiki.test.page.TestNoScriptMacro;
+import org.xwiki.test.page.XWikiSyntax21ComponentList;
+import org.xwiki.uiextension.script.UIExtensionScriptServiceComponentList;
+
+import com.xpn.xwiki.doc.XWikiDocument;
+import com.xpn.xwiki.objects.BaseObject;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * Page test for {@code XWiki.SearchSuggestSourceSheet}.
+ *
+ * @version $Id$
+ */
+@ComponentList({
+    TestNoScriptMacro.class
+})
+@UIExtensionScriptServiceComponentList
+@RenderingScriptServiceComponentList
+@DefaultRenderingConfigurationComponentList
+@HTML50ComponentList
+@XWikiSyntax21ComponentList
+class SearchSuggestSourceSheetPageTest extends PageTest
+{
+    private static final String WIKI_NAME = "xwiki";
+
+    private static final String XWIKI_SPACE = "XWiki";
+
+    private static final DocumentReference SEARCH_SUGGEST_SOURCE_SHEET =
+        new DocumentReference(WIKI_NAME, XWIKI_SPACE, "SearchSuggestSourceSheet");
+
+    private static final DocumentReference SEARCH_SUGGEST_SOURCE_CLASS =
+        new DocumentReference(WIKI_NAME, XWIKI_SPACE, "SearchSuggestSourceClass");
+
+    private XWikiDocument searchSuggestSourceSheetDocument;
+
+    @BeforeEach
+    void setUp() throws Exception
+    {
+        this.xwiki.initializeMandatoryDocuments(this.context);
+
+        this.loadPage(SEARCH_SUGGEST_SOURCE_CLASS);
+        this.searchSuggestSourceSheetDocument = this.loadPage(SEARCH_SUGGEST_SOURCE_SHEET);
+    }
+
+    @Test
+    void checkPropertiesEscaping() throws Exception
+    {
+        // Create an instance of XWiki.SearchSuggestSourceClass with properties that require escaping.
+        String[] properties = new String[]{"name", "engine", "url", "query", "resultsNumber", "icon"};
+        String unescapedProperty = "{{/html}}}}}{{noscript}}";
+        BaseObject searchSuggestSource =
+            this.searchSuggestSourceSheetDocument.newXObject(SEARCH_SUGGEST_SOURCE_CLASS, this.context);
+        for (String property : properties) {
+            searchSuggestSource.set(property, unescapedProperty, this.context);
+        }
+        this.xwiki.saveDocument(this.searchSuggestSourceSheetDocument, this.context);
+
+        this.context.setDoc(this.searchSuggestSourceSheetDocument);
+        Document document = renderHTMLPage(this.searchSuggestSourceSheetDocument);
+        Elements labels = document.getElementsByTag("label");
+        Elements values = document.getElementsByTag("dd");
+
+        // Check that the value of the property has not been evaluated for each label that we know of.
+        for (String property : properties) {
+            int iLabel = -1;
+            for (int i = 0; i < labels.size(); i++) {
+                if (labels.get(i).text().replaceAll("^.*_", "").equals(property)) {
+                    iLabel = i;
+                    break;
+                }
+            }
+            assertTrue(iLabel >= 0, "Could not find property " + property + " in rendered document.");
+            assertEquals(unescapedProperty, values.get(iLabel).text());
+        }
+    }
+}