The Rust Programming Language rustdoc version Between 0.8 and 1.27.0 contains a CWE-427: Uncontrolled Search Path Element vulnerability in rustdoc plugins that can result in local code execution as a different user. This attack appear to be exploitable via using the --plugin flag without the --plugin-path flag. This vulnerability appears to have been fixed in 1.27.1.
https://security.gentoo.org/glsa/201812-11
https://groups.google.com/forum/#%21topic/rustlang-security-announcements/4ybxYLTtXuM
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00031.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00076.html