Packaging Xerces in war causes JSF ClassCastException on SAXParserFactory

ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost]. (main) Exception sending context initialized event to listener instance of class org.jboss.web.jsf.integration.config.JBossJSFConfigureListener
java.lang.ClassCastException: org.apache.xerces.jaxp.SAXParserFactoryImpl cannot be cast to javax.xml.parsers.SAXParserFactory
at javax.xml.parsers.SAXParserFactory.newInstance(SAXParserFactory.java:128)
at com.sun.faces.config.ConfigureListener$WebXmlProcessor.getConfiguredFactory(ConfigureListener.java:702)
at com.sun.faces.config.ConfigureListener$WebXmlProcessor.scanForFacesServlet(ConfigureListener.java:674)
at com.sun.faces.config.ConfigureListener$WebXmlProcessor.<init>(ConfigureListener.java:648)
at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:156)
at org.jboss.web.jsf.integration.config.JBossJSFConfigureListener.contextInitialized(JBossJSFConfigureListener.java:60)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3910)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4389)
at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeployInternal(TomcatDeployment.java:321)
at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeploy(TomcatDeployment.java:145)
at org.jboss.web.deployers.AbstractWarDeployment.start(AbstractWarDeployment.java:461)
at org.jboss.web.deployers.WebModule.startModule(WebModule.java:118)