A vulnerability in PostgreSQL PL/Perl allows unprivileged database users to modify sensitive process environment variables such as PATH. This flaw affects PostgreSQL versions prior to 17.1, 16.5, 15.9, 14.14, 13.17, and 12.21. Exploiting this issue can enable arbitrary code execution without requiring operating system user privileges. The vulnerability has a high severity rating with a CVSS score of 8.8.