diff --git a/examples/osgi-helloworld-webapp/functional-test/pom.xml b/examples/osgi-helloworld-webapp/functional-test/pom.xml
index ffaba75418..5f39937bf6 100644
--- a/examples/osgi-helloworld-webapp/functional-test/pom.xml
+++ b/examples/osgi-helloworld-webapp/functional-test/pom.xml
@@ -90,6 +90,11 @@
         </dependency>
 
         <!-- JUnit and Pax-Exam dependencies -->
+        <dependency>
+            <groupId>org.osgi</groupId>
+            <artifactId>org.osgi.service.cm</artifactId>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>org.ops4j.pax.exam</groupId>
             <artifactId>pax-exam-junit4</artifactId>
diff --git a/examples/osgi-helloworld-webapp/functional-test/src/test/java/org/glassfish/jersey/examples/helloworld/test/WebAppFelixTest.java b/examples/osgi-helloworld-webapp/functional-test/src/test/java/org/glassfish/jersey/examples/helloworld/test/WebAppFelixTest.java
index 4a6c2514cf..44fc5741d2 100644
--- a/examples/osgi-helloworld-webapp/functional-test/src/test/java/org/glassfish/jersey/examples/helloworld/test/WebAppFelixTest.java
+++ b/examples/osgi-helloworld-webapp/functional-test/src/test/java/org/glassfish/jersey/examples/helloworld/test/WebAppFelixTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2021 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -37,6 +37,7 @@ public class WebAppFelixTest extends AbstractWebAppTest {
     @Override
     public List<Option> osgiRuntimeOptions() {
         return Arrays.asList(CoreOptions.options(
+                mavenBundle().groupId("org.osgi").artifactId("org.osgi.service.cm").versionAsInProject(),
                 mavenBundle()
                         .groupId("org.apache.felix").artifactId("org.apache.felix.eventadmin")
                         .versionAsInProject()
diff --git a/examples/osgi-http-service/functional-test/pom.xml b/examples/osgi-http-service/functional-test/pom.xml
index 6f580933a1..4cf8383276 100644
--- a/examples/osgi-http-service/functional-test/pom.xml
+++ b/examples/osgi-http-service/functional-test/pom.xml
@@ -106,6 +106,19 @@
             <scope>test</scope>
         </dependency>
 
+        <dependency>
+            <groupId>org.osgi</groupId>
+            <artifactId>org.osgi.service.http</artifactId>
+            <version>1.2.1</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.osgi</groupId>
+            <artifactId>org.osgi.service.cm</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
@@ -200,6 +213,16 @@
                         <goals>
                             <goal>test</goal>
                         </goals>
+                        <configuration>
+                            <excludes>
+                                <!--
+                                excluded due to javax.servlet-api collision -
+                                more than one version is required, so it is not possible to execute that test.
+                                (since pax-exam version 4.13.4)
+                                  -->
+                                <exclude>org.glassfish.jersey.examples.osgihttpservice.test.GrizzlyHttpServiceFelixTest</exclude>
+                            </excludes>
+                        </configuration>
                     </execution>
                 </executions>
             </plugin>
diff --git a/examples/osgi-http-service/functional-test/src/test/java/org/glassfish/jersey/examples/osgihttpservice/test/JettyHttpServiceFelixTest.java b/examples/osgi-http-service/functional-test/src/test/java/org/glassfish/jersey/examples/osgihttpservice/test/JettyHttpServiceFelixTest.java
index f73bb1195e..0f5ee0cd90 100644
--- a/examples/osgi-http-service/functional-test/src/test/java/org/glassfish/jersey/examples/osgihttpservice/test/JettyHttpServiceFelixTest.java
+++ b/examples/osgi-http-service/functional-test/src/test/java/org/glassfish/jersey/examples/osgihttpservice/test/JettyHttpServiceFelixTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2021 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -27,6 +27,8 @@ public class JettyHttpServiceFelixTest extends AbstractHttpServiceTest {
     @Override
     public List<Option> osgiRuntimeOptions() {
         return Arrays.asList(CoreOptions.options(
+                mavenBundle().groupId("org.osgi").artifactId("org.osgi.service.http").versionAsInProject(),
+                mavenBundle().groupId("org.osgi").artifactId("org.osgi.service.cm").versionAsInProject(),
                 mavenBundle().groupId("org.apache.felix").artifactId("org.apache.felix.eventadmin").versionAsInProject()
         ));
     }
diff --git a/ext/wadl-doclet/src/main/java/org/glassfish/jersey/wadl/doclet/DocletUtils.java b/ext/wadl-doclet/src/main/java/org/glassfish/jersey/wadl/doclet/DocletUtils.java
index 4dea216a86..8712e989ae 100644
--- a/ext/wadl-doclet/src/main/java/org/glassfish/jersey/wadl/doclet/DocletUtils.java
+++ b/ext/wadl-doclet/src/main/java/org/glassfish/jersey/wadl/doclet/DocletUtils.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2021 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -16,29 +16,37 @@
 
 package org.glassfish.jersey.wadl.doclet;
 
-import com.sun.org.apache.xml.internal.serialize.OutputFormat;
-import com.sun.org.apache.xml.internal.serialize.XMLSerializer;
-
 import java.io.BufferedOutputStream;
+import java.io.ByteArrayInputStream;
 import java.io.FileOutputStream;
 import java.io.OutputStream;
 import java.io.StringWriter;
 import java.lang.reflect.Array;
 import java.lang.reflect.Field;
+import java.util.Arrays;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import javax.xml.bind.JAXBContext;
 import javax.xml.bind.Marshaller;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
 
 import org.glassfish.jersey.server.wadl.internal.generators.resourcedoc.model.ResourceDocType;
+import org.w3c.dom.CDATASection;
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
 
 class DocletUtils {
 
     private static final Logger LOG = Logger.getLogger(DocletUtils.class.getName());
 
     private static String[] getCDataElements(DocProcessor docProcessor) {
-        String[] original = new String[]{"ns1^commentText", "ns2^commentText", "^commentText" };
+        String[] original = new String[]{"commentText"};
         if (docProcessor == null) {
             return original;
         } else {
@@ -64,30 +72,6 @@ private static <T, U> T[] copyOf(U[] original, int newLength) {
         return copy;
     }
 
-    private static XMLSerializer getXMLSerializer(OutputStream os, String[] cdataElements)
-            throws InstantiationException, IllegalAccessException, ClassNotFoundException {
-        // configure an OutputFormat to handle CDATA
-        OutputFormat of = new OutputFormat();
-
-        // specify which of your elements you want to be handled as CDATA.
-        // The use of the '^' between the namespaceURI and the localname
-        // seems to be an implementation detail of the xerces code.
-        // When processing xml that doesn't use namespaces, simply omit the
-        // namespace prefix as shown in the third CDataElement below.
-        of.setCDataElements(cdataElements);
-
-        // set any other options you'd like
-        of.setPreserveSpace(true);
-        of.setIndenting(true);
-
-        // create the serializer
-        XMLSerializer serializer = new XMLSerializer(of);
-
-        serializer.setOutputByteStream(os);
-
-        return serializer;
-    }
-
     private static Class<?>[] getJAXBContextClasses(ResourceDocType result, DocProcessor docProcessor) {
         Class<?>[] clazzes;
         if (docProcessor == null) {
@@ -108,15 +92,39 @@ private static Class<?>[] getJAXBContextClasses(ResourceDocType result, DocProce
     }
 
     static boolean createOutputFile(String filePath, DocProcessor docProcessor, ResourceDocType result) {
+        String[] cdataElements = getCDataElements(docProcessor);
+        Class<?>[] classes = getJAXBContextClasses(result, docProcessor);
+        LOG.info("cdataElements " + Arrays.asList(cdataElements));
+        LOG.info("classes " + Arrays.asList(classes));
         try (OutputStream out = new BufferedOutputStream(new FileOutputStream(filePath))) {
-            Class<?>[] clazzes = getJAXBContextClasses(result, docProcessor);
-            JAXBContext c = JAXBContext.newInstance(clazzes);
+            JAXBContext c = JAXBContext.newInstance(classes);
             Marshaller m = c.createMarshaller();
             m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
-            String[] cdataElements = getCDataElements(docProcessor);
-            XMLSerializer serializer = getXMLSerializer(out, cdataElements);
-            m.marshal(result, serializer);
-            LOG.info("Wrote " + result);
+            StringWriter sw = new StringWriter();
+            // Produces XML in memory
+            m.marshal(result, sw);
+            // Loads the XML from memory for processing
+            Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder()
+                    .parse(new ByteArrayInputStream(sw.toString().getBytes()));
+            for (String cdata : cdataElements) {
+                NodeList nodes = document.getElementsByTagName(cdata);
+                LOG.info(nodes.getLength() + " nodes found by " + cdata);
+                for (int i = 0; i < nodes.getLength(); i++) {
+                    Node node = nodes.item(i);
+                    CDATASection cdataSection = document.createCDATASection(node.getTextContent());
+                    // Remove current content
+                    node.setTextContent(null);
+                    // Add it again, but wrapped with CDATA
+                    node.appendChild(cdataSection);
+                }
+                document.createCDATASection(cdata);
+            }
+            DOMSource source = new DOMSource(document);
+            StreamResult streamResult = new StreamResult(out);
+            TransformerFactory transformerFactory = TransformerFactory.newInstance();
+            Transformer transformer = transformerFactory.newTransformer();
+            transformer.transform(source, streamResult);
+            LOG.info("Wrote " + result + " in " + filePath);
             return true;
         } catch (Exception e) {
             LOG.log(Level.SEVERE, "Could not serialize ResourceDoc.", e);
diff --git a/pom.xml b/pom.xml
index 156cf98b57..543789b6bb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1799,6 +1799,13 @@
                 <scope>provided</scope>
             </dependency>
 
+            <dependency>
+                <groupId>org.osgi</groupId>
+                <artifactId>org.osgi.service.cm</artifactId>
+                <version>${osgi.service.cm.version}</version>
+                <scope>provided</scope>
+            </dependency>
+
             <dependency>
                 <groupId>org.glassfish.main.ejb</groupId>
                 <artifactId>ejb-container</artifactId>
@@ -2134,7 +2141,8 @@
         <osgi.version>6.0.0</osgi.version>
         <osgi.framework.version>1.10.0</osgi.framework.version>
         <osgi.compendium.version>5.0.0</osgi.compendium.version>
-        <pax.exam.version>4.13.1</pax.exam.version>
+        <osgi.service.cm.version>1.6.0</osgi.service.cm.version>
+        <pax.exam.version>4.13.4</pax.exam.version>
         <pax.web.version>0.7.4</pax.web.version><!-- TODO: UPGRADE! -->
         <paxexam.mvn.plugin.version>1.2.4</paxexam.mvn.plugin.version>
         <rxjava.version>1.2.5</rxjava.version>
diff --git a/tests/osgi/functional/pom.xml b/tests/osgi/functional/pom.xml
index c9a5ff1403..fe64512f7e 100644
--- a/tests/osgi/functional/pom.xml
+++ b/tests/osgi/functional/pom.xml
@@ -100,6 +100,11 @@
             <artifactId>jakarta.annotation-api</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.osgi</groupId>
+            <artifactId>org.osgi.service.cm</artifactId>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>org.ops4j.pax.exam</groupId>
             <artifactId>pax-exam</artifactId>
diff --git a/tests/osgi/functional/src/test/java/org/glassfish/jersey/osgi/test/basic/ApacheOsgiIntegrationTest.java b/tests/osgi/functional/src/test/java/org/glassfish/jersey/osgi/test/basic/ApacheOsgiIntegrationTest.java
index 1207b51b71..d6df4e8750 100644
--- a/tests/osgi/functional/src/test/java/org/glassfish/jersey/osgi/test/basic/ApacheOsgiIntegrationTest.java
+++ b/tests/osgi/functional/src/test/java/org/glassfish/jersey/osgi/test/basic/ApacheOsgiIntegrationTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2019 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2021 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -55,6 +55,7 @@ public static Option[] configuration() {
         final List<Option> options = Helper.getCommonOsgiOptions();
         options.addAll(Helper.expandedList(
                 mavenBundle().groupId("org.ops4j.pax.logging").artifactId("pax-logging-api").versionAsInProject(),
+                mavenBundle().groupId("org.osgi").artifactId("org.osgi.service.cm").versionAsInProject(),
                 mavenBundle().groupId("org.apache.httpcomponents").artifactId("httpcore-osgi").versionAsInProject(),
                 mavenBundle().groupId("org.apache.httpcomponents").artifactId("httpclient-osgi").versionAsInProject(),
                 mavenBundle().groupId("org.glassfish.jersey.connectors").artifactId("jersey-apache-connector")