PHPUnit: Argument injection via newline in PHP INI values forwarded to child processes_CVE-2026-41570

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-05-08T14:33:51.630Z",
    "modified": "2026-05-08T14:33:51.630Z",
    "type": "cve",
    "title": "PHPUnit: Argument injection via newline in PHP INI values forwarded to child processes",
    "source": "GitHub_M",
    "references": "https://github.com/sebastianbergmann/phpunit/security/advisories/GHSA-qrr6-mg7r-m243\nhttps://github.com/sebastianbergmann/phpunit/pull/6592",
    "id": "CVE-2026-41570",
    "bulletinFamily": "",
    "cwe": [
        "CWE-93",
        "CWE-88"
    ],
    "cvelist": null,
    "sourceData": "sebastianbergmann phpunit = 12.5.21\nsebastianbergmann phpunit = 13.1.5",
    "sourceHref": "",
    "cvss": {
        "score": 7.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
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        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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            "baseScore": 0,
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "phpunit",
    "version": "= 12.5.21",
    "vendor": "sebastianbergmann",
    "ai_description": "",
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    "ai_score": 0
}