Arbitrary Code Execution Vulnerability in PostgreSQL intarray Extension
CVE-2026-2004

8.8HIGH

Key Information:

Vendor

PostgreSQL
Status
Postgresql
Vendor
CVE Published:
12 February 2026

What is CVE-2026-2004?

A vulnerability exists in the PostgreSQL intarray extension where the lack of proper input validation in the selectivity estimator function allows a malicious object creator to execute arbitrary code using the privileges of the operating system user running the database. This poses a significant security risk, especially for deployments running affected versions of PostgreSQL prior to the specified updates. Users are encouraged to upgrade their installations to mitigate this risk.

Affected Version(s)

PostgreSQL 18 < 18.2

PostgreSQL 17 < 17.8

PostgreSQL 16 < 16.12

References

https://www.postgresql.org/support/security/CVE-2026-2004/

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

The PostgreSQL project thanks Daniel Firer, as part of zeroday.cloud, for reporting this problem.
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