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GHSA-jf5h-cf95-w759 — raw-cpuid

GHSA-jf5h-cf95-w759 is a Improper Input Validation vulnerability in raw-cpuid. A fix is available for raw-cpuid — see the affected versions and patch details below.

Optional `Deserialize` implementations lacking validation

Also known asCVE-2021-45687GHSA-w428-f65r-h4q2RUSTSEC-2021-0089
Published
Jun 17, 2022
Updated
Nov 8, 2023
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Sep 24, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs65th percentile — riskier than 65% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

1 pkg affected
🦀raw-cpuid

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.

Description

When activating the non-default feature serialize, most structs implement serde::Deserialize without sufficient validation. This allows breaking invariants in safe code, leading to:

  • Undefined behavior in as_string() methods (which use std::str::from_utf8_unchecked() internally).
  • Panics due to failed assertions.

See https://github.com/gz/rust-cpuid/issues/43.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.ioraw-cpuid≥ 3.1.0&&< 9.1.19.1.1cargo update -p raw-cpuid --precise 9.1.1

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for raw-cpuid, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update raw-cpuid to 9.1.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-jf5h-cf95-w759 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-jf5h-cf95-w759 can be triaged on real exposure rather than presence alone.

Tailored to GHSA-jf5h-cf95-w759. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

When activating the non-default feature `serialize`, most structs implement `serde::Deserialize` without sufficient validation. This allows breaking invariants in safe code, leading to: * Undefined behavior in `as_string()` methods (which use `std::str::from_utf8_unchecked()` internally). * Panics due to failed assertions. See https://github.com/gz/rust-cpuid/issues/43.
O3 Security · Impact-Aware SCA

Is GHSA-jf5h-cf95-w759 in your dependencies?

O3 Security finds GHSA-jf5h-cf95-w759 across crates.io dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

GHSA-jf5h-cf95-w759: raw-cpuid | O3 Security