RUSTSEC-2026-0273 Stubbed cryptography without warnings
The manzana crate provides a stubbed Secure Enclave signer that returns fixed values, misleading users into believing they have secure cryptographic operations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- Available
What is RUSTSEC-2026-0273?
RUSTSEC-2026-0273 is a vulnerability in manzana, published on 7 Apr 2026.
Official description
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.
Which versions are affected by RUSTSEC-2026-0273?
1 open source package ship an affected version, including manzana.
| Package | Affected | Fixed in |
|---|---|---|
manzana crates.io | From 0.0.0-0 | 0.3.0 |
How do I fix RUSTSEC-2026-0273?
Upgrade manzana to 0.3.0 or later.
Is RUSTSEC-2026-0273 being exploited?
There is no known exploitation of RUSTSEC-2026-0273 in the wild and no public exploit code.