Vasilij

**Name of the Vulnerable Software and Affected Versions** CHICKEN versions 5.x before 5.3.1 **Description** The issue allows arbitrary OS command execution during package installation via escape characters in a .egg file. This is due to a problem in the egg-compile.scm file. **Recommendations** For CHICKEN versions 5.x before 5.3.1, update to version 5.3.1 or later to resolve the issue. As a temporary workaround, consider restricting the installation of packages from untrusted sources to minimize the risk of exploitation.