GHSA-r57r-j98g-587f
CRITICALGHSA-r57r-j98g-587f is a critical-severity (CVSS 9.8) vulnerability in nanorand. O3 Security confirms whether GHSA-r57r-j98g-587f is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Pointer dereference in nanorand
Real-World Exposure
nanorandReal-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
An issue was discovered in the nanorand crate before 0.6.1 for Rust. There can be multiple mutable references to the same object because the TlsWyRand Deref implementation dereferences a raw pointer.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | nanorand | ≥ 0.5.0&&< 0.6.1 | 0.6.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for nanorand. 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 nanorand to 0.6.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r57r-j98g-587f 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-r57r-j98g-587f 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-r57r-j98g-587f. 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-r57r-j98g-587f in your dependencies?
O3 detects GHSA-r57r-j98g-587f 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.