cve.bz

CVE-2021-38194

9.8 criticalEPSS 1.3%

Critical (9.8) in arcworks ark-r1cs-std. EPSS 1.3% chance of exploitation in the next 30 days. Fixed in ark-r1cs-std 0.3.1.

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.

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
1.3% chance of exploitation in the next 30 days; higher than 69% of CVEs (scores of 2026-10-31)
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-qj3v-q2vj-4c8hcrates.ioark-r1cs-std>=0.2.0 <0.3.10.3.1
RUSTSEC-2021-0075crates.ioark-r1cs-std>=0.0.0-0 <0.3.10.3.1

References

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