Patches have been released for all identified vulnerabilities in PostgreSQL and MariaDB, with strong recommendations for users to upgrade to the latest fixed versions. A zero-day flaw in PostgreSQL, classified as CVE-2026-2005, is a heap-based buffer overflow issue in the "pgcrypto" extension. This vulnerability allows attackers to exploit specially crafted input, leading to out-of-bounds writes and potential remote code execution on the database server. It affects all supported versions of PostgreSQL and has been addressed in updates v18.2, v17.8, v16.12, v15.16, and v14.21. The flaw has a high-severity rating of CVSS 8.8 out of 10 and has existed since 2005.