New PHP Composer Flaws Enable Arbitrary Command Execution — Patches Released

The Hacker News

April 14, 2026 at 3:57 PM

Overview

Two serious vulnerabilities have been found in Composer, a popular package manager for PHP, which could allow attackers to execute arbitrary commands on affected systems. These flaws specifically target the Perforce VCS driver, raising concerns for developers and organizations that rely on this tool for managing PHP packages. If exploited, these vulnerabilities could lead to unauthorized access and control over systems using the affected versions. Users need to act quickly to apply the patches released to secure their environments and protect sensitive data from potential breaches. The vulnerabilities highlight the importance of maintaining updated software to mitigate risks.

Key Takeaways

Affected Systems: Composer package manager for PHP, Perforce VCS driver
Action Required: Patches have been released for the vulnerabilities.
Timeline: Newly disclosed

Original Article Summary

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 software) driver. Details of the two flaws are below - CVE-2026-40176 (CVSS

Impact

Composer package manager for PHP, Perforce VCS driver

Exploitation Status

No active exploitation has been reported at this time. However, organizations should still apply patches promptly as proof-of-concept code may exist.

Timeline

Newly disclosed

Remediation

Patches have been released for the vulnerabilities. Users are advised to update to the latest version of Composer that addresses these command injection flaws.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Vulnerability.

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