GHSA-mh6w-vxff-9wqp: PHPUnit: Argument injection via newline in PHP INI values forwarded to child processes

high Affects phpunit/phpunit. Feed 2026.10.29.1, updated 2026-10-28; published 2026-04-22.

PHPUnit: Argument injection via newline in PHP INI values forwarded to child processes

Package: phpunit/phpunit Composer
Affected versions: >=12.5.21 and <12.5.22 or >=13.1.5 and <13.1.6
Fixed in: 12.5.22, 13.1.6
Severity: high CVSS 7.8
Exploitation: not on CISA KEV
Published: 2026-04-22
Source: osv.dev

References

Am I affected?

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# 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

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