Rust advisories / cbox
Vulnerability CriticalRUSTSEC-2020-0005 · cbox
RUSTSEC-2020-0005: CBox API allows to de-reference raw pointers without `unsafe` code
Short answerA security vulnerability in the cbox crate: CBox API allows to de-reference raw pointers without `unsafe` code. Critical severity (CVSS 9.8). No fixed version: replace the crate or remove the affected code path.
| Crate | cbox |
|---|---|
| Type | Vulnerability (memory-corruption) |
| Affected versions | Every version. |
| Fixed in | none |
| Severity | Critical, CVSS 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2020-03-19 |
| Last changed | 2023-11-08 |
| Also known as | CVE-2020-35860, GHSA-3vjm-36rr-7qrq |
What to do
- Find who pulls it in:
cargo tree -i cbox. - Avoid the affected API, or replace the crate.
Details from the advisory
CBox and CSemiBox are part of the public API of the cbox crate and they allow to create smart pointers from raw pointers and de-reference them without the need of unsafe code.
References
- Package: crates.io/crates/cbox
- Advisory: rustsec.org/advisories/RUSTSEC-2020-0005.html
- Report: github.com/TomBebbington/cbox-rs/issues/2
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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