CVE-2026-40176 Composer is vulnerable to Command Injection via Malicious Perforce Repository

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...

Composer's missing argument delimiter can lead to code execution via VCS repository URLs or source download URLs on systems with Mercurial

URLs for Mercurial repositories in the root composer.json and package source download URLs are not sanitized correctly. Specifically crafted URL values allow commands to be executed in the HgDriver if hg/Mercurial is installed on the system. Impact - The impact to Composer users directly is limit...

GHSA-H5H8-PC6H-JVVX Composer's missing argument delimiter can lead to code execution via VCS repository URLs or source download URLs on systems with Mercurial

URLs for Mercurial repositories in the root composer.json and package source download URLs are not sanitized correctly. Specifically crafted URL values allow commands to be executed in the HgDriver if hg/Mercurial is installed on the system. Impact - The impact to Composer users directly is limit...

Arbtirary Command Execution

composer/composer is vulnerable to arbitrary command execution. A missing argument delimiter allows an attacker to inject and execute arbitrary commands via VCS repository URLs or source download URLs on systems with Mercurial...

CVE-2021-29472 Missing argument delimiter can lead to code execution via VCS repository URLs or source download URLs on systems with Mercurial in composer

Composer is a dependency manager for PHP. URLs for Mercurial repositories in the root composer.json and package source download URLs are not sanitized correctly. Specifically crafted URL values allow code to be executed in the HgDriver if hg/Mercurial is installed on the system. The impact to...

Missing argument delimiter can lead to command execution via VCS repository URLs or source download URLs on systems with Mercurial

URLs for Mercurial repositories in the root composer.json and package source download URLs are not sanitized correctly. Specifically crafted URL values allow commands to be executed in the HgDriver if hg/Mercurial is installed on the system. Impact - The impact to Composer users directly is limit...