CVE-2019-9081 — laravel/framework
CRITICALCVE-2019-9081 is a critical-severity (CVSS 9.8) remote code execution vulnerability in laravel/framework. 2 public exploit references exist, so weaponization risk is real. A fix is available for laravel/framework — see the affected versions and patch details below.
Laravel Framework Deserialization Vulnerability
Real-World Exposure
laravel/frameworkReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
The Illuminate component of Laravel Framework 5.7.x has a deserialization vulnerability that can lead to remote code execution if the content is controllable, related to the __destruct method of the PendingCommand class in PendingCommand.php.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | laravel/framework | ≥ 5.7.0&&< 6.20.44 | 6.20.44composer require laravel/framework:^6.20.44 |
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 laravel/framework, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update laravel/framework to 6.20.44 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-9081 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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2019-9081 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2019-9081. 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-2019-9081 in your dependencies?
O3 Security finds CVE-2019-9081 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.