CVE-2021-38194

9.8 CRITICAL

An issue was discovered in the ark-r1cs-std crate before 0.3.1 for Rust

Published: 2021-08-08 · Last updated: 2026-06-17

Severity and scoring

CVSS: 9.8 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Vendor	Product
arcworks	ark-r1cs-std

Description

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::mul_by_inverse method. Thus, a prover can produce a proof that is unsound but is nonetheless verified.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-38194
[Other]https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ark-r1cs-std/RUSTSEC-2021-0075.md
[Patch]https://rustsec.org/advisories/RUSTSEC-2021-0075.html
[Other]https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ark-r1cs-std/RUSTSEC-2021-0075.md
[Patch]https://rustsec.org/advisories/RUSTSEC-2021-0075.html