PHPUnit: Argument injection via newline in PHP INI values forwarded to child processes

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Summary

CVECVE-2026-41570
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-08 15:16:40 UTC
Updated2026-05-08 19:45:25 UTC
DescriptionPHPUnit 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000670000 probability, percentile 0.205540000 (date 2026-05-12)

Problem Types: CWE-88 | CWE-93 | CWE-93 CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection') | CWE-88 CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Phpunit Project Phpunit 12.5.21 All All All
Application Phpunit Project Phpunit 13.1.5 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Sebastianbergmann Phpunit affected = 12.5.21 Not specified
CNA Sebastianbergmann Phpunit affected = 13.1.5 Not specified

References

ReferenceSourceLinkTags
github.com/sebastianbergmann/phpunit/security/advisories/GHSA-qrr6-mg7r-... [email protected] github.com Mitigation, Patch, Vendor Advisory
github.com/sebastianbergmann/phpunit/pull/6592 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com Issue Tracking, Patch
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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