RUSTSEC-2026-0160 `pqcrypto-sphincsplus` is unmaintained: upstream PQClean project being archived
The pqcrypto-sphincsplus crate is unmaintained due to upstream archival, requiring users to migrate to the slh-dsa crate for continued security support.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Not stated
- Victim action needed
- Not stated
- Fix
- None listed
What is RUSTSEC-2026-0160?
RUSTSEC-2026-0160 is a vulnerability in pqcrypto-sphincsplus, published on 4 Jun 2026.
Official description
This crate provides Rust bindings to SPHINCS+/SLH-DSA (FIPS 205) via C implementations from PQClean. The PQClean project is being archived in or after July 2026 (see PQClean/PQClean#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 slh-dsa crate, which provides a
pure-Rust implementation of SLH-DSA (FIPS 205).
Which versions are affected by RUSTSEC-2026-0160?
1 open source package ship an affected version, including pqcrypto-sphincsplus.
| Package | Affected | Fixed in |
|---|---|---|
pqcrypto-sphincsplus crates.io | From 0.0.0-0 | None |
How do I fix RUSTSEC-2026-0160?
No fix has been published for RUSTSEC-2026-0160 yet. Limit exposure of the affected software until one is available.
Is RUSTSEC-2026-0160 being exploited?
There is no known exploitation of RUSTSEC-2026-0160 in the wild and no public exploit code.