CVE-2026-119193: PHPUnit vulnerable to code execution by other local users via shared temporary directory in PHPT code coverage handling

medium Affects phpunit/phpunit. Feed 2026.11.09.1, updated 2026-11-08; published 2026-10-30.

PHPUnit vulnerable to code execution by other local users via shared temporary directory in PHPT code coverage handling

Package: phpunit/phpunit Composer
Affected versions: >=13.4.0 and <13.4.4
Fixed in: 13.4.4
Severity: medium
Exploitation: not on CISA KEV · EPSS 0% (1.4th percentile)
Published: 2026-10-30
Source: osv.dev

References

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.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden deps composer.lock

# or, without Composer
pipx install phpwarden   &&   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-2017-9841 KEV critical Code Injection in PHPUnit same package: phpunit/phpunit
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
CVE-2011-4293 medium Moodle Double-Caches Content, Potentially Writing to a File System's Tmp Directory same weakness: CWE-379
CVE-2026-109618 KEV critical Upload-progress use-after-free and remote process-memory disclosure also from 2026