composer-CVE-2026-40261-CVE-2026-40176-PoC

!CAUTION THIS REPOSITORY CONTAINS PROOF-OF-CONCEPT CODE FOR VULNERABILITIES CVE-2026-40261 AND CVE-2026-40176 IN COMPOSER. !CAUTION THE CODE IS INTENDED FOR EDUCATIONAL AND TESTING PURPOSES ONLY. !CAUTION DO NOT USE THIS CODE IN PRODUCTION ENVIRONMENTS OR AGAINST SYSTEMS WITHOUT PROPER...

Exploit for CVE-2026-84361

CVE-2026-84361: Composer’s P4PORT command execution PoC Engl...

CVE-2026-59793: External Control of File Name or Path

In JetBrains TeamCity before 2026.1.2 arbitrary file access was possible via the Perforce VCS integration...

CVE-2026-40176: Improper Input Validation

Composer is a dependency manager for PHP. Versions 1.0 through 2.2.26 and 2.3 through 2.9.5 contain a command injection vulnerability in the Perforce::generateP4Command method, which constructs shell commands by interpolating user-supplied Perforce connection parameters port, user, client without...

New PHP Composer Flaws Enable Arbitrary Command Execution — Patches Released

Two high-severity security vulnerabilities have been disclosed in Composer, a package manager for PHP, that, if successfully exploited, could result in arbitrary command execution. The vulnerabilities have been described as command injection flaws affecting the Perforce VCS version control softwa...