php-shellcommand command injection vulnerabilityGHSA-c7fv-wv9f-cgjw
CRITICALFix: mikehaertl/php-shellcommand@8d98d85GHSA-c7fv-wv9f-cgjw is a critical-severity (CVSS 9.8) OS Command Injection vulnerability in mikehaertl/php-shellcommand. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for mikehaertl/php-shellcommand — see the affected versions and patch details below.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
mikehaertl/php-shellcommandReal-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
php-shellcommand versions before 1.6.1 have a command injection vulnerability. Successful exploitation could lead to arbitrary code execution.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | mikehaertl/php-shellcommand | all versions | 1.6.1composer require mikehaertl/php-shellcommand:^1.6.1 |
Affected Products
php-shellcommandphp-shellcommand_projectResearch 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 mikehaertl/php-shellcommand, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update mikehaertl/php-shellcommand to 1.6.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-c7fv-wv9f-cgjw is resolved across your whole dependency graph.
Workarounds
Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.
Frequently Asked Questions
Is GHSA-c7fv-wv9f-cgjw in your dependencies?
Find it across Packagist, including transitive dependencies.