Vulnerability · Published Oct 29, 2026 · Assigned by GitHub_M
CVE-2026-119193PHPUnit vulnerable to code execution by other local users via shared temporary directory in PHPT code coverage handling
Medium 5.4
In plain English
A medium-severity security flaw in phpunit from sebastianbergmann. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:14 | phpunit | 13.4.5+ds-1 | DEBIAN-CVE-2026-119193 |
| Packagist | phpunit/phpunit | 13.4.4 | GHSA-9vw2-f4vp-x7gf |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| sebastianbergmann | phpunit | >= 13.4.0, < 13.4.4 |
Weakness: CWE-379 · Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N