Unsound HighRUSTSEC-2020-0028 · rocket
RUSTSEC-2020-0028: `LocalRequest::clone` creates multiple mutable references to the same object
Short answerrocket has an API that can cause undefined behaviour from safe code: `LocalRequest::clone` creates multiple mutable references to the same object. Fixed in 0.4.5.
| Crate | rocket |
|---|---|
| Type | Unsound |
| Affected versions | From 0.4.0 before 0.4.5. |
| Fixed in | 0.4.5 |
| Severity | High, CVSS 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2020-05-27 |
| Last changed | 2023-11-08 |
| Also known as | CVE-2020-35882, GHSA-8q2v-67v7-6vc6 |
| Affected functions | rocket::local::LocalRequest::clone |
What to do
- See which version you have:
cargo tree -i rocket(it also shows which of your dependencies pulls it in). - Update within your version requirement:
cargo update -p rocket. If the fix is a newer major or minor than your requirement allows, raise it in Cargo.toml (for examplerocket = "0.4.5") 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 affected version of rocket contains a Clone trait implementation of LocalRequest that reuses the pointer to inner Request object. This causes data race in rare combinations of APIs if the original and the cloned objects are modified at the same time.
References
- Package: crates.io/crates/rocket
- Advisory: rustsec.org/advisories/RUSTSEC-2020-0028.html
- Report: github.com/SergioBenitez/Rocket/issues/1312
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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