CVE-2026-6637 (GCVE-0-2026-6637)
Vulnerability from cvelistv5
Published
2026-05-14 13:00
Modified
2026-05-15 03:56
Severity ?
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-121 - Stack-based Buffer Overflow
  • CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Summary
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.
References
Impacted products
Vendor Product Version
n/a PostgreSQL Version: 18   < 18.4
Version: 17   < 17.10
Version: 16   < 16.14
Version: 15   < 15.18
Version: 0   < 14.23
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