CVE-2026-41570PHPUnit: Argument injection via newline in PHP INI values forwarded to child processes
Updated under an hour ago ()
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It affects sebastianbergmann phpunit and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-93, CWE-88
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- May 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
sebastianbergmann phpunit sebastianbergmann:phpunit (from the name) | = 12.5.21; = 13.1.5 | CNA record |
phpunit_project phpunit phpunit_project:phpunit | 12.5.21; 13.1.5 | NVD |
References
- https://github.com/sebastianbergmann/phpunit/security/advisories/GHSA-qrr6-mg7r-m243x-refsource-confirm, mitigation, patch, vendor-advisory
- https://github.com/sebastianbergmann/phpunit/pull/6592x-refsource-misc, issue-tracking, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.