Erlang/OTP Rebar3 version 3.7.0 through 3.7.5 contains a Signing oracle vulnerability in Package registry verification that can result in Package modifications not detected, allowing code execution. This attack appears to be exploitable via Victim fetches packages from malicious/compromised mirror. This vulnerability appears to have been fixed in 3.8.0. Upstream Pull request: https://github.com/erlang/rebar3/pull/1986 Upstream code changelog: https://github.com/erlang/rebar3/releases/tag/3.8.0