Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-6637

Stack buffer overflow in PostgreSQL module "refint" allows an unprivileged database user to execute arbitrary code as the operating system user running the database. A distinct attack is possible if the application declares a user-controlled column as a "refint" cascade primary key and facilitates user-controlled updates to that column. In that case, a SQL injection allows a primary key update value provider to execute arbitrary SQL as the database user performing the primary key update. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 12.9%
CVSS Severity
CVSS v3 Score 8.8
Products affected by CVE-2026-6637


Contact Us

Shodan ® - All rights reserved