CVSS 3.1 Score 6.4 of 10 (medium)


Published Sep 29, 2023
Updated: Mar 27, 2024


CVE-2023-43655 is a vulnerability that affects Composer, a dependency manager for PHP. If users publish a composer.phar file to a publicly accessible web server and have the register_argc_argv option enabled in php.ini, they may be vulnerable to remote code execution. This vulnerability has been patched in versions 2.6.4, 2.2.22, and 1.10.27 of Composer, so users are advised to upgrade to these versions. If upgrading is not possible, users should disable the register_argc_argv option in php.ini and avoid publishing composer.phar files on the web. This vulnerability poses a potential danger to organizations as it can allow attackers to execute arbitrary code on the affected systems, compromising their integrity and confidentiality. The severity of this vulnerability is rated as MEDIUM with a CVSS score of 6.4 out of 10, indicating high privileges required for exploitation and significant impact on integrity and confidentiality.

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