Excludes vulnerable version of mxparser and uses fixed one
diff --git a/pom.xml b/pom.xml
index 7373522..d0122a7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1122,9 +1122,20 @@
                 <groupId>com.thoughtworks.xstream</groupId>
                 <artifactId>xstream</artifactId>
                 <version>1.4.16</version>
+                <exclusions>
+                    <exclusion>
+                        <groupId>io.github.x-stream</groupId>
+                        <artifactId>mxparser</artifactId>
+                    </exclusion>
+                </exclusions>
             </dependency>
 
             <dependency>
+                <groupId>io.github.x-stream</groupId>
+                <artifactId>mxparser</artifactId>
+                <version>1.2.1</version>
+            </dependency>
+            <dependency>
                 <groupId>javax.persistence</groupId>
                 <artifactId>persistence-api</artifactId>
                 <version>1.0.2</version>