Key Findings Two high-severity command injection vulnerabilities discovered in PHP Composer's Perforce VCS driver CVE-2026-40176 (CVSS 7.8) and CVE-2026-40261 (CVSS 8.8) allow arbitrary command execution through malicious repository configs and crafted inputs Patches released: Composer 2.9.6 (mainline) and 2.2.27 (LTS) No active exploitation detected on Packagist.org or Private Packagist as of April 10, 2026 Perforce metadata publishing temporarily disabled as precaution Back
