Rust advisories / miscreant
UnmaintainedRUSTSEC-2021-0062 · miscreant
RUSTSEC-2021-0062: project abandoned; migrate to the `aes-siv` crate
Short answerNot a bug report: miscreant is no longer maintained, so future security issues will not be fixed. Plan to move to a maintained alternative.
| Crate | miscreant |
|---|---|
| Type | Unmaintained |
| Affected versions | Every version. |
| Fixed in | not applicable (the crate is unmaintained) |
| Severity | not scored |
| Published | 2021-02-28 |
| Last changed | 2021-05-03 |
| Also known as | none |
What to do
- Look for a maintained fork or alternative crate.
- If you cannot move yet, acknowledge it in your audit config so CI stays green while you plan: add
"RUSTSEC-2021-0062"toignorein.cargo/audit.tomlordeny.toml, with a comment saying why. - Find who pulls it in:
cargo tree -i miscreant.
Details from the advisory
The Miscreant project has been abandoned and archived.
The Rust implementation has been adapted into the new aes-siv crate which implements both the AES-CMAC-SIV and AES-PMAC-SIV constructions:
<https://github.com/RustCrypto/AEADs/tree/master/aes-siv>
Please migrate to the aes-siv crate.
Alternatively see the aes-gcm-siv crate for a newer, faster construction which provides similar properties:
<https://github.com/RustCrypto/AEADs/tree/master/aes-gcm-siv>
References
- Package: crates.io/crates/miscreant
- Advisory: rustsec.org/advisories/RUSTSEC-2021-0062.html
- Web: github.com/miscreant/miscreant.rs/commit/5d921f579e0c2b9960d472cf377b8487d97fbcec
From the RustSec Advisory Database (CC0-1.0) via the OSV export, downloaded Oct 24, 2026. Severity score computed from the published CVSS vector.
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