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Creation of Temporary File in Directory with Incorrect Permissions Affecting phpunit package, versions <13.4.5+ds-1

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.11% (2nd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-PHPUNIT-21957180
  • published30 Oct 2026
  • disclosed29 Oct 2026
Report a new vulnerability Found a mistake?

Introduced: 29 Oct 2026

NewCVE-2026-119193  (opens in a new tab)
CWE-379  (opens in a new tab)

How to fix?

Upgrade Debian:unstable phpunit to version 13.4.5+ds-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream phpunit package and not the phpunit package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

PHPUnit is a testing framework for PHP. From 13.4.0 until 13.4.4, the TestCase::coverageFilesDirectory() logic in src/Runner/Phpt/TestCase.php creates temporary files for PHPT code coverage in a predictable phpunit-phpt directory under sys_get_temp_dir() and reuses that directory without verifying its ownership or permissions. On multi-user systems with a shared temporary path, a local attacker who creates the directory before the developer runs PHPT tests with code coverage can replace the generated job file before the child process executes it with require, allowing arbitrary code execution with the developer's privileges while the test and coverage report appear successful. PHPUnit 12.5 and earlier, default macOS and Windows configurations with per-user temporary directories, and single-user environments where another user cannot create files in the temporary path are not affected. This issue is fixed in 13.4.4.