lib/yard/core_ext/file.rb in the server in YARD before 0.9.11 does not block relative paths with an initial ../ sequence, which allows attackers to conduct directory traversal attacks and read arbitrary files.
{ "versions": [ { "introduced": "0" }, { "fixed": "0.9.11" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-17042.json"