CVE-2019-10769
CRITICALCVE-2019-10769 is a critical-severity (CVSS 9.8) Code Injection vulnerability in safer-eval. 1 public exploit reference exists, so weaponization risk is real. O3 Security confirms whether CVE-2019-10769 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Sandbox Breakout / Arbitrary Code Execution in safer-eval
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.
safer-evalnpmDescription
All versions of safer-eval are vulnerable to Sandbox Escape leading to Remote Code Execution. The package fails to restrict access to the main context and is not suited to process arbitrary user input. This may allow attackers to execute arbitrary code in the system.
Recommendation
The package is not meant to receive user input. Consider using an alternative package until a fix is made available.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | safer-eval | all versions | No fix |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for safer-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 safer-eval has shipped for CVE-2019-10769 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 CVE-2019-10769 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 CVE-2019-10769. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2019-10769 in your dependencies?
O3 detects CVE-2019-10769 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.