CVE-2026-6575

PostgreSQL pg_restore_attribute_stats accepts values that cause query planning to read past end of stats array

Published: 5/14/2026 Last updated: 5/14/2026 Reserved: 4/19/2026

Buffer over-read in PostgreSQL function pg_restore_attribute_stats() accepts array values of unmatched length, which causes query planning to read past end of one array. This allows a table maintainer to infer memory values past that array end. Within major version 18, minor versions before PostgreSQL 18.4 are affected. Versions before PostgreSQL 18 are unaffected.

CNA assigner: PostgreSQL (f86ef6dc-4d3a-42ad-8f28-e6d5547a5007) Requested by: n/a

Metrics

Version	Score	Severity	Vector String
3.1	4.3	Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Opam packages affected (5)

conf-mingw-w64-postgresql-i686 conf-mingw-w64-postgresql-x86_64 conf-postgresql ocsigen-start postgresql

Products affected (1)

Product	Vendor	Version
PostgreSQL	n/a	n/a

References (1)

https://www.postgresql.org/support/security/CVE-2026-6575/

Credits (1)

The PostgreSQL project thanks Jeroen Gui for reporting this problem.