cgit_clone_objects in CGit before 1.2.1 has a directory traversal vulnerability when `enable-http-clone=1` is not turned off, as demonstrated by a cgit/cgit.cgi/git/objects/?path=../ request.
https://www.exploit-db.com/exploits/45195/
https://www.debian.org/security/2018/dsa-4263
https://lists.zx2c4.com/pipermail/cgit/2018-August/004176.html
https://lists.debian.org/debian-lts-announce/2018/08/msg00005.html
https://bugs.chromium.org/p/project-zero/issues/detail?id=1627