CXF error when parsing a SOAP 1.2 fault: Invalid QName in mapping

When receiving the following SOAP 1.2 fault, a parsing error occurs in Soap12FaultInInterceptor:
<S:Envelope xmlns:S="http://www.w3.org/2003/05/soap-envelope"
xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd"
xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd"
xmlns:wst="http://schemas.xmlsoap.org/ws/2005/02/trust"
xmlns:psf="http://schemas.microsoft.com/Passport/SoapServices/SOAPFault">
<S:Body>
<S:Fault>
<S:Code>
<S:Value>S:Sender</S:Value>
<S:Subcode>
<S:Value>wst:FailedAuthentication</S:Value>
</S:Subcode>
</S:Code>
<S:Reason>
<S:Text xml:lang="en-US">Authentication Failure</S:Text>
</S:Reason>
<S:Detail>
<psf:error>
<psf:value>0x80048821</psf:value>
<psf:internalerror>
<psf:code>0x80041012</psf:code>
<psf:text>The entered and stored passwords do not match. </psf:text>
</psf:internalerror>
</psf:error>
</S:Detail>
</S:Fault>
</S:Body>
</S:Envelope>

Stack trace:
java.lang.RuntimeException: Invalid QName in mapping: wst:FailedAuthentication
at org.apache.cxf.helpers.XMLUtils.getQName(XMLUtils.java:447)
at org.apache.cxf.binding.soap.interceptor.Soap12FaultInInterceptor.unmarshalFault(Soap12FaultInInterceptor.java:88)
at org.apache.cxf.binding.soap.interceptor.Soap12FaultInInterceptor.handleMessage(Soap12FaultInInterceptor.java:59)
at org.apache.cxf.binding.soap.interceptor.Soap12FaultInInterceptor.handleMessage(Soap12FaultInInterceptor.java:46)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
at org.apache.cxf.interceptor.AbstractFaultChainInitiatorObserver.onMessage(AbstractFaultChainInitiatorObserver.java:113)
at org.apache.cxf.binding.soap.interceptor.CheckFaultInterceptor.handleMessage(CheckFaultInterceptor.java:69)
at org.apache.cxf.binding.soap.interceptor.CheckFaultInterceptor.handleMessage(CheckFaultInterceptor.java:34)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
at org.apache.cxf.endpoint.ClientImpl.onMessage(ClientImpl.java:799)
at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponseInternal(HTTPConduit.java:1627)
at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponse(HTTPConduit.java:1494)
at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:1402)
at org.apache.cxf.io.CacheAndWriteOutputStream.postClose(CacheAndWriteOutputStream.java:47)
at org.apache.cxf.io.CachedOutputStream.close(CachedOutputStream.java:195)
at org.apache.cxf.transport.AbstractConduit.close(AbstractConduit.java:56)
at org.apache.cxf.transport.http.HTTPConduit.close(HTTPConduit.java:649)
at org.apache.cxf.interceptor.MessageSenderInterceptor$MessageSenderEndingInterceptor.handleMessage(MessageSenderInterceptor.java:62)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
at org.apache.cxf.endpoint.ClientImpl.doInvoke(ClientImpl.java:533)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:463)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:366)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:319)
at org.apache.cxf.ws.security.trust.STSClient.requestSecurityToken(STSClient.java:708)
at org.apache.cxf.ws.security.trust.STSClient.requestSecurityToken(STSClient.java:584)
at org.apache.cxf.ws.security.trust.STSClient.requestSecurityToken(STSClient.java:576)
at net.entropysoft.eci.sharepoint.webservices.SharepointWebServices.authenticateToSharePointOnline(SharepointWebServices.java:426)

This happens because Soap12FaultInInterceptor creates a new DOM document with the Fault element but omits the namespace declarations on parent nodes (Envelope and Body).