cvedb.io
CVE-2026-6637
HIGH · CVSS 8.8
EPSS exploitation probability: 0%
Published 2026-05-14T14:16:25.820 · Last modified 2026-06-17T11:01:08.343

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.

Affected products

postgresql — postgresql

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.