The xmlParseElementDecl function in parser.c in libxml2 before 2.9.4 allows context-dependent attackers to cause a denial of service (heap-based buffer underread and application crash) via a crafted file, involving xmlParseName.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-4447.json"