CVE-2026-2003: PostgreSQL

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

Affected products

• PostgreSQL PostgreSQL: from 14.0, before 14.21 (fixed in 14.21); from 15.0, before 15.16 (fixed in 15.16); from 16.0, before 16.12 (fixed in 16.12); from 17.0, before 17.8 (fixed in 17.8); from 18.0, before 18.2 (fixed in 18.2)

Published 2026-02-12. Last modified 2026-06-17.