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...

CVE-2026-40176

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...

CVE-2026-40176

CVE-2026-40176 affects Composer (PHP dependency manager). The vulnerability lies in Perforce integration: Perforce::generateP4Command() constructs shell commands by interpolating user-supplied Perforce connection parameters (port, user, client) without proper escaping, enabling command injection....

CVE-2026-40176

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 安全漏洞

Composer is an open-source application developed by Composer. It provides a tool for declaring, managing, and installing dependencies of PHP projects. Versions 1.0 to 2.2.26, as well as 2.3 to 2.9.5 of Composer, have security vulnerabilities. These vulnerabilities stem from a command injection...

Linux Distros Unpatched Vulnerability : CVE-2026-40176

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Composer 安全漏洞

Composer is an open-source application developed by Composer. It provides a tool for declaring, managing, and installing dependencies of PHP projects. Versions of Composer from 1.0 to 2.2.26, as well as from 2.3 to 2.9.5, have security vulnerabilities. These vulnerabilities stem from command...

Linux Distros Unpatched Vulnerability : CVE-2026-40261

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Composer has a command injection via malicious perforce repository

Impact The Perforce::generateP4Command method constructed shell commands by interpolating user-supplied Perforce connection parameters port, user, client without proper escaping. An attacker controlling a repository configuration in a malicious composer.json declaring a Perforce VCS repository...

Command Injection

Overview composer/composer is a Dependency Manager for PHP. Composer helps you declare, manage and install dependencies of PHP projects. It ensures you have the right stack everywhere. Affected versions of this package are vulnerable to Command Injection via the generateP4Command function. An...

GHSA-WG36-WVJ6-R67P Composer has a command injection via malicious perforce repository

Impact The Perforce::generateP4Command method constructed shell commands by interpolating user-supplied Perforce connection parameters port, user, client without proper escaping. An attacker controlling a repository configuration in a malicious composer.json declaring a Perforce VCS repository...

Composer has a command injection via malicious perforce reference

Impact The Perforce::syncCodeBase method appended the $sourceReference parameter to a shell command without proper escaping, allowing an attacker to inject arbitrary commands through a crafted source reference containing shell metacharacters. Further as in GHSA-wg36-wvj6-r67p / CVE-2026-40176 the...

GHSA-GQW4-4W2P-838Q Composer has a command injection via malicious perforce reference

Impact The Perforce::syncCodeBase method appended the $sourceReference parameter to a shell command without proper escaping, allowing an attacker to inject arbitrary commands through a crafted source reference containing shell metacharacters. Further as in GHSA-wg36-wvj6-r67p / CVE-2026-40176 the...

Command Injection

Overview composer/composer is a Dependency Manager for PHP. Composer helps you declare, manage and install dependencies of PHP projects. It ensures you have the right stack everywhere. Affected versions of this package are vulnerable to Command Injection via the Perforce::syncCodeBase and...

composer: command injection via malicious Perforce source reference/url

A flaw was found in Composer. Perforce::syncCodeBase appends the $sourceReference parameter to a shell command without proper escaping, allowing an attacker to inject arbitrary commands through a crafted source reference containing shell metacharacters...

composer: command injection via malicious Perforce repository definition

A flaw was found in Composer. Perforce::generateP4Command constructs shell commands by interpolating user-supplied Perforce connection parameters port, user, client without proper escaping, allowing an attacker to inject arbitrary commands through these values in a malicious composer.json declari...

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...

Command injection via malicious Perforce repository definition

Impact The Perforce::generateP4Command method constructed shell commands by interpolating user-supplied Perforce connection parameters port, user, client without proper escaping. An attacker controlling a repository configuration in a malicious composer.json declaring a Perforce VCS repository...

Command injection via malicious Perforce source reference/url

Impact The Perforce::syncCodeBase method appended the $sourceReference parameter to a shell command without proper escaping, allowing an attacker to inject arbitrary commands through a crafted source reference containing shell metacharacters. Further as in GHSA-wg36-wvj6-r67p / CVE-2026-40176 the...

PT-2026-32621

Name of the Vulnerable Software and Affected Versions Composer versions 1.0 through 2.2.26 Composer versions 2.3 through 2.9.5 Description A command injection issue exists in the Perforce VCS driver of Composer, a dependency manager for PHP. The Perforce::generateP4Command function constructs she...