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.
{
"nvd_published_at": "2021-08-08T06:15:00Z",
"github_reviewed_at": "2021-08-18T21:27:27Z",
"github_reviewed": true,
"cwe_ids": [
"CWE-682"
],
"severity": "CRITICAL"
}