Rust advisories / manzana
VulnerabilityRUSTSEC-2026-0273 · manzana
RUSTSEC-2026-0273: Stubbed cryptography without warnings
Short answerA security vulnerability in the manzana crate: Stubbed cryptography without warnings. No severity score was published. Fixed in 0.3.0: update to a fixed version.
| Crate | manzana |
|---|---|
| Type | Vulnerability (crypto-failure) |
| Affected versions | Before 0.3.0. |
| Fixed in | 0.3.0 |
| Severity | not scored |
| Published | 2026-04-07 |
| Last changed | 2026-09-09 |
| Also known as | none |
| Affected functions | manzana::secure_enclave::SecureEnclaveSigner::create, manzana::secure_enclave::SecureEnclaveSigner::delete, manzana::secure_enclave::SecureEnclaveSigner::load, manzana::secure_enclave::SecureEnclaveSigner::sign, manzana::secure_enclave::SecureEnclaveSigner::verify |
What to do
- See which version you have:
cargo tree -i manzana(it also shows which of your dependencies pulls it in). - Update within your version requirement:
cargo update -p manzana. If the fix is a newer major or minor than your requirement allows, raise it in Cargo.toml (for examplemanzana = "0.3.0") or update the dependency that pulls it in. - Check again with
cargo audit, or paste your Cargo.lock into our Cargo.toml checker.
Details from the advisory
The manzana crate appears to be a work-in-progress module for the Apple Silicon chips' features, including the Secure Enclave.
This crate's description and READMEs make no hint at the fact that the SecureEnclaveSigner type is a stubbed implementation that does not actually perform any cryptographic operations, and instead returns fixed values.
Unsuspecting users of the crate, who may not check the source code, receive no warning about this and may believe they are using a secure implementation when they are not.
There are currently (as of 2026-04-07) no versions of the crate that contain either a real implementation, or a warning about the stubbed cryptography.
References
- Package: crates.io/crates/manzana
- Advisory: rustsec.org/advisories/RUSTSEC-2026-0273.html
- Report: github.com/paiml/manzana/issues/3
- Web: github.com/paiml/manzana/blob/89e3183ac38088d418a2edeb9d3e0f35133b27a3/README.md
- Web: github.com/paiml/manzana/blob/89e3183ac38088d418a2edeb9d3e0f35133b27a3/src/secure_enclave.rs#L312
- Web: github.com/paiml/manzana/blob/89e3183ac38088d418a2edeb9d3e0f35133b27a3/src/secure_enclave.rs#L352
From the RustSec Advisory Database (CC0-1.0) via the OSV export, downloaded Oct 24, 2026. Severity score computed from the published CVSS vector.
Up next
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