CVE-2026-14676 PUBLISHED

PostgreSQL pg_stat_statements heap buffer overflow executes arbitrary code

Assigner: PostgreSQL
Reserved: 03.07.2026 Published: 13.08.2026 Updated: 13.08.2026

Heap buffer overflow in PostgreSQL pg_stat_statements allows the query author to execute arbitrary code as the operating system user running the database, via crafted queries containing array constants. Within major version 18, minor versions before PostgreSQL 18.5 are affected. Versions before PostgreSQL 18 are unaffected.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	n/a
Product	PostgreSQL
Versions	Default: unaffected affected from 18 to 18.5 (excl.)

Affected Configurations

pg_stat_statements is enabled

Credits

The PostgreSQL project thanks Sajeeb Lohani (with TrendAI Zero Day Initiative), Yuelin Wang, and David Korczynski (Claude and Ada Logics) for reporting this problem.

References

https://www.postgresql.org/support/security/CVE-2026-14676/

Problem Types

Heap-based Buffer Overflow CWE