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OpenAdvisories
Unscored RUSTSEC-2026-0166

`pqcrypto-mldsa` is unmaintained: upstream PQClean project being archived

Published Jun 4, 2026 · Updated Jun 4, 2026 · Assigned by RUSTSEC

Description

This crate provides Rust bindings to ML-DSA (FIPS 204) via C implementations
from [PQClean](https://github.com/PQClean/PQClean). The PQClean project is
being archived in or after July 2026 (see [PQClean/PQClean#604](https://github.com/PQClean/PQClean/issues/604)),
after which no further security patches or bug fixes will be applied to the
upstream implementations.

As a result, this crate will no longer receive updates. Users should migrate
to the [`ml-dsa`](https://crates.io/crates/ml-dsa) crate, which provides a
pure-Rust implementation of ML-DSA (FIPS 204).

Affected packages

EcosystemPackageAffectedFixedRecord
crates.io pqcrypto-mldsa >= 0.0.0-0 — RUSTSEC-2026-0166

References