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CVE-2026-2004 — PostgreSQL intarray missing validation of type of input to selectivity estimator executes arbitrary code

2026-10-08T22:48:49.392096+00:00

Affected: PostgreSQL, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions and 11 more

Missing validation of type of input in PostgreSQL intarray extension selectivity estimator function allows an object creator to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

USN-8072-1 — postgresql-14, postgresql-16, postgresql-17 vulnerabilities

2026-10-08T22:48:49.392214+00:00

Affected: Ubuntu:22.04:LTS: postgresql-14, Ubuntu:24.04:LTS: postgresql-16, Ubuntu:25.10: postgresql-17

Altan Birler discovered that PostgreSQL incorrectly validated oidvector types. An attacker could possibly use this issue to obtain a few bytes of sensitive information. (CVE-2026-2003)

Daniel Firer discovered that PostgreSQL incorrectly validated input in the intarray extension. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-2004)

It was dicovered that PosgreSQL incorrectly handled certain pgcrypto memory operations. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-2005)

Paul Gerste and Moritz Sanft discovered that PostgreSQL incorrectly validated multibyte character lengths. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-2006)