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.

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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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