CVSS 3.1 Score 5.5 of 10 (medium)


Published Oct 30, 2023
Updated: Nov 6, 2023
CWE ID 125


CVE-2023-21308 is a vulnerability in Composer, a dependency management tool for PHP. The vulnerability allows for an out-of-bounds read due to a missing bounds check, potentially leading to local privilege escalation without the need for additional execution privileges or user interaction. This vulnerability affects multiple products, including Composer itself and various other software packages. The risk score is 26, indicating a medium severity level. The potential danger this vulnerability poses to an organization includes the potential disclosure of confidential information. To remediate the vulnerability, users should update Composer and any affected software packages to the latest version available.

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