GHSA-f8h3-rqrm-47v9
GHSA-f8h3-rqrm-47v9 is a security vulnerability in smart-extend. O3 Security confirms whether GHSA-f8h3-rqrm-47v9 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Prototype Pollution in smart-extend
Real-World Exposure
smart-extendReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects npm packages — download data is not available via public APIs for these ecosystems.
Description
All versions of smart-extend are vulnerable to Prototype Pollution. The deep() function allows attackers to modify the prototype of Object causing the addition or modification of an existing property that will exist on all objects.
Recommendation
No fix is currently available. Consider using an alternative module until a fix is made available.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | smart-extend | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for smart-extend. 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.
Remediation status
No patched version of smart-extend has shipped for GHSA-f8h3-rqrm-47v9 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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-f8h3-rqrm-47v9 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-f8h3-rqrm-47v9. 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-f8h3-rqrm-47v9 in your dependencies?
O3 detects GHSA-f8h3-rqrm-47v9 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.