GHSA-2326-pfpj-vx3h
lexical-core has multiple soundness issues
Blast Radius
lexical-coreReal-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
RUSTSEC-2024-0377 contains multiple soundness issues:
- Bytes::read() allows creating instances of types with invalid bit patterns
- BytesIter::read() advances iterators out of bounds
- The
BytesItertrait has safety invariants but is public and not markedunsafe write_float()callsMaybeUninit::assume_init()on uninitialized data, which is is not allowed by the Rust abstract machineradix()callsMaybeUninit::assume_init()on uninitialized data, which is is not allowed by the Rust abstract machine
Version 1.0 fixes these issues, removes the vast majority of unsafe code, and also fixes some correctness issues.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | lexical-core | all versions | 1.0.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for lexical-core. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update lexical-core to 1.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-2326-pfpj-vx3h is resolved across your whole dependency graph.
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.
How O3 protects you
O3 pinpoints whether GHSA-2326-pfpj-vx3h is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-2326-pfpj-vx3h. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-2326-pfpj-vx3h in your dependencies?
O3 detects GHSA-2326-pfpj-vx3h across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.