CRLF Injection Affecting phpunit/phpunit package, versions >=12.5.21, <12.5.22>=13.1.5, <13.1.6
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-PHPUNITPHPUNIT-16301623
- published27 Apr 2026
- disclosed22 Apr 2026
- creditkayw-geek
Introduced: 22 Apr 2026
CVE-2026-41570 (opens in a new tab)How to fix?
Upgrade phpunit/phpunit to version 12.5.22, 13.1.6 or higher.
Overview
Affected versions of this package are vulnerable to CRLF Injection via the settingsToParameters process. An attacker can execute arbitrary code and alter the configuration of child processes by injecting newline characters into PHP INI values that are forwarded to child processes. This allows the attacker to introduce additional INI directives, potentially enabling the loading of malicious files or extensions.
Workaround
This vulnerability can be mitigated by auditing INI values to ensure they do not contain newline, double quote, or semicolon characters, isolating CI execution of untrusted code, restricting modification permissions for configuration files, and sanitizing the host PHP's INI settings.