In OnlineJudge 2.0, the sandbox has an incorrect access control vulnerability that can write a file anywhere. A user can write a directory listing to /tmp, and can leak file data with a #include.
{ "versions": [ { "introduced": "0" }, { "last_affected": "2.0" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-16367.json"