CVE-2017-9841: Code Injection in PHPUnit

critical KEV Affects phpunit/phpunit. Feed 2026.10.29.1, updated 2026-10-28; published 2022-03-26; advisory modified 2025-10-22; listed on CISA KEV 2022-02-15.

Code Injection in PHPUnit

Package: phpunit/phpunit Composer
Affected versions: >=4.8.19 and <4.8.28 or >=5.0.10 and <5.6.3
Fixed in: 4.8.28, 5.6.3
Severity: critical CVSS 9.8
Exploitation: KEV listed by CISA as actively exploited · EPSS 100% (100.0th percentile)
Published: 2022-03-26
Source: osv.dev

References

CWE-94

NVD record phpunit/phpunit advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden deps composer.lock

Or keep it checked automatically: GitHub Action · pre-commit hook · GitLab CI · Laravel artisan command

Install docs How findings are ranked

Related advisories

CVE-2026-24765 high PHPUnit Vulnerable to Unsafe Deserialization in PHPT Code Coverage Handling same package: phpunit/phpunit
CVE-2026-41570 high PHPUnit has Argument injection via newline in PHP INI values that are forwarded to child p same package: phpunit/phpunit
GHSA-mh6w-vxff-9wqp high PHPUnit: Argument injection via newline in PHP INI values forwarded to child processes same package: phpunit/phpunit
GHSA-9vw2-f4vp-x7gf unknown PHPUnit vulnerable to code execution by other local users via shared temporary directory i same package: phpunit/phpunit
CVE-2021-3129 KEV critical Unauthenticated remote code execution via insecure file handling in debug mode same weakness: CWE-94
CVE-2025-32432 KEV critical Craft CMS Allows Remote Code Execution same weakness: CWE-94