Cross-site scripting (XSS) vulnerability in IPython 3.x before 3.2 allows remote attackers to inject arbitrary web script or HTML via vectors involving JSON error messages and the /api/contents path.
https://ipython.org/ipython-doc/3/whatsnew/version3.html
https://github.com/ipython/ipython/commit/c2078a53543ed502efd968649fee1125e0eb549c
https://github.com/ipython/ipython/commit/7222bd53ad089a65fd610fab4626f9d0ab47dfce
https://bugzilla.redhat.com/show_bug.cgi?id=1235688