PHPUnit allows remote attackers to execute arbitrary PHP code via HTTP POST data beginning with a "<?php " substring, as demonstrated by an attack on a site with an exposed /vendor folder, i.e., external access to the /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php URI.
Remediation
Apply updates per vendor instructions.
Exploit info
No exploit-tagged NVD references in our cache; see the CISA KEV link below.
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