cve/2023/CVE-2023-43655.md

### [CVE-2023-43655](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43655)
![](https://img.shields.io/static/v1?label=Product&message=composer&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%202.6.4%2C%202.2.21%2C%201.10.27%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-74%3A%20Improper%20Neutralization%20of%20Special%20Elements%20in%20Output%20Used%20by%20a%20Downstream%20Component%20('Injection')&color=brighgreen)

### Description

Composer is a dependency manager for PHP. Users publishing a composer.phar to a public web-accessible server where the composer.phar can be executed as a php file may be subject to a remote code execution vulnerability if PHP also has `register_argc_argv` enabled in php.ini. Versions 2.6.4, 2.2.22 and 1.10.27 patch this vulnerability. Users are advised to upgrade. Users unable to upgrade should make sure `register_argc_argv` is disabled in php.ini, and avoid publishing composer.phar to the web as this is not best practice.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds