Red Hat Security Advisory 2017-0937-01 – The defusedxml package contains several Python-only updates for security vulnerabilities in Python’s XML libraries. Defusedxml functions and classes can be used instead of the originals to protect against entity-expansion and DTD-retrieval issues. PySAML2 is the python implementation of SAML Version 2, containing all the functionality for building a SAML2 service provider or an identity provider, to be used in a WSGI environment. Multiple security issues have been addressed.