The SVG Salamander (aka svgSalamander) library, when used in a web application, allows remote attackers to conduct server-side request forgery (SSRF) attacks via an xlink:href attribute in an SVG file.
https://security.gentoo.org/glsa/202003-11
https://github.com/blackears/svgSalamander/issues/11
http://www.securityfocus.com/bid/95871
http://www.openwall.com/lists/oss-security/2017/01/29/2