CVE-2026-14679

A flaw was found in PostgreSQL. An object creator can exploit a stack buffer overflow vulnerability within the argument name matching component. By manipulating the OUT parameter count, an attacker can write limited arbitrary bytes (0x0 and 0x1) to server memory, which may lead to unknown impacts.

This Important PostgreSQL stack buffer overflow allows an authenticated object creator to trigger unknown impacts by manipulating OUT parameter counts. While requiring existing database privileges, successful exploitation could lead to service disruption and minor data integrity issues, elevating the risk beyond a Moderate classification.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.