GHSA-9vw2-f4vp-x7gf: PHPUnit vulnerable to code execution by other local users via shared temporary directory in PHPT code coverage handling

unknown Affects phpunit/phpunit. Feed 2026.10.29.4, updated 2026-10-29.

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: unknown
Exploitation: not on CISA KEV
Source: friendsofphp

References

https://github.com/sebastianbergmann/phpunit/security/advisories/GHSA-9vw2-f4vp-x7gf

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

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