GHSA-3j63-5h8p-gf7c
x402 SDK vulnerable in outdated versions in resource servers for builders
Blast Radius
x402📦x402-next📦x402-express📦x402-honoReal-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
Impact
There is a security vulnerability in outdated versions of the x402 SDK. This does not directly affect users' keys, smart contracts, or funds.
This primarily impacts builders working on resource servers.
Patches
Please update to the following package versions:
- x402 >= 0.5.2
- x402-next >= 0.5.2
- x402-express >= 0.5.2
- x402-hono >= 0.5.2
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | x402 | all versions | 0.5.2 |
| 📦npm | x402-next | all versions | 0.5.2 |
| 📦npm | x402-express | all versions | 0.5.2 |
| 📦npm | x402-hono | all versions | 0.5.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for x402. 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 x402 to 0.5.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-3j63-5h8p-gf7c 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-3j63-5h8p-gf7c 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-3j63-5h8p-gf7c. 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-3j63-5h8p-gf7c in your dependencies?
O3 detects GHSA-3j63-5h8p-gf7c across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.