CVE-2026-41570
HighSummary
PHPUnit in versions 12.5.21 and 13.1.5 forwards PHP INI settings to child processes as command-line arguments without neutralizing INI metacharacters. This allows an attacker to inject additional INI directives, potentially leading to remote code execution.
Risk Assessment
Organizations may be exposed to remote code execution in child processes, which can lead to serious security breaches and data loss.
Recommendation
It is recommended to update PHPUnit to versions 12.5.22 or 13.1.6 to mitigate this vulnerability.
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Original NVD description (English source)
PHPUnit is a testing framework for PHP. In versions 12.5.21 and 13.1.5, PHPUnit forwards PHP INI settings to child processes (used for isolated/PHPT test execution) as -d name=value command-line arguments without neutralizing INI metacharacters. Because PHP's INI parser interprets " as a string delimiter, ; as the start of a comment, and most importantly a newline as a directive separator, a value containing a newline is parsed by the child process as multiple INI directives. An attacker able to influence a single INI value can therefore inject arbitrary additional directives into the child's configuration, including auto_prepend_file, extension, disable_functions, open_basedir, and others. Setting auto_prepend_file to an attacker-controlled path yields remote code execution in the child process. This issue has been patched in versions 12.5.22 and 13.1.6.