Description
NPR Visuals Team Pym.js version versions 0.4.2 up to 1.3.1 contains a Cross ite Request Forgery (CSRF) vulnerability in Pym.js _onNavigateToMessage function. https://github.com/nprapps/pym.js/blob/master/src/pym.js#L573 that can result in Arbitrary javascript code execution. This attack appear to be exploitable via Attacker gains full javascript access to pages with Pym.js embeds when user visits an attacker crafted page.. This vulnerability appears to have been fixed in versions 1.3.2 and later.
Remediation
References
http://blog.apps.npr.org/2018/02/15/pym-security-vulnerability.html
https://github.com/nprapps/pym.js
https://github.com/nprapps/pym.js/issues/170