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

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 proper escaping. An attacker can inject arbitrary commands through these values in a malicious composer.json declaring a Perforce VCS repository, leading to command execution in the context of the user running Composer, even if Perforce is not installed. VCS repositories are only loaded from the root composer.json or the composer config directory, so this cannot be exploited through composer.json files of packages installed as dependencies. Users are at risk if they run Composer commands on untrusted projects with attacker-supplied composer.json files. This issue has been fixed in Composer 2.2.27 (2.2 LTS) and 2.9.6 (mainline).

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

输入验证不恰当

Composer 安全漏洞

Composer是Composer开源的一个应用软件。提供一个声明，管理和安装PHP项目的依赖项。 Composer 1.0至2.2.26版本和2.3至2.9.5版本存在安全漏洞，该漏洞源于Perforce::generateP4Command方法存在命令注入问题，可能导致命令执行。

N/A

N/A