CVE-2026-46420

Description

setup-php is a GitHub action to set up PHP with extensions, php.ini configuration, coverage drivers, and tools. From 2.25.0 prior to 2.37.1, shivammathur/setup-php resolves the PHP version from repository-controlled files such as .php-version, composer.lock through platform-overrides.php, and composer.json through config.platform.php, and insufficiently constrains those values before incorporating them into generated shell or PowerShell setup scripts, allowing command injection on a GitHub Actions runner when workflows such as pull_request_target check out attacker-controlled contents before invoking setup-php. This issue is fixed in version 2.37.1.

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Produits concernés

• shivammathur setup-php
• Shivammathur setup php

Scores CVSS

Faiblesses (CWE)

• CWE-78

Références

• https://github.com/shivammathur/setup-php/commit/eeef37e059fb5368a5bc8ed8ce45ff54bd39b80b Patch
• https://github.com/shivammathur/setup-php/releases/tag/2.37.1 ProductRelease Notes
• https://github.com/shivammathur/setup-php/security/advisories/GHSA-pqwm-q9pv-ph8r PatchVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories