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Advisory record · GHSA-mh6w-vxff-9wqp

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

CVSS 7.8 High

Published by the GitHub Advisory Database at 22 Apr 2026, 14:56 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
phpunit/phpunitPackagist>=12.5.21, <12.5.22 || >=13.1.5, <13.1.612.5.22, 13.1.6
Identifiers
GHSA-mh6w-vxff-9wqp · PKSA-qccq-2pht-gg3w
Weakness (CWE)
CWE-88 · CWE-93
Tags
Published
22 Apr 2026
Updated
22 Apr 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

phpunit/phpunit 12.5.21 before 12.5.22 and 13.1.5 before 13.1.6 forward INI values to child processes without neutralizing newlines. An attacker who can write an INI value, such as in phpunit.xml or php.ini, can inject extra directives and possibly run code in the child process. Upgrade to 12.5.22 or 13.1.6.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.8 High 3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 14:25 UTC First seen by agentprime
  2. 31 Oct 2026, 14:25 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.