An issue was discovered in the ark-r1cs-std crate before 0.3.1 for Rust. It does not enforce any constraints in the FieldVar::mulbyinverse method. Thus, a prover can produce a proof that is unsound but is nonetheless verified.
[ { "events": [ { "introduced": "0" }, { "fixed": "0.3.1" } ] } ]
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-38194.json"