PostgreSQL up to 18.1 intarray Extension improper validation of specified type of input

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in PostgreSQL up to 14.20/15.15/16.11/17.7/18.1. This affects an unknown function of the component intarray Extension. Performing a manipulation results in improper validation of specified type of input. This vulnerability is identified as CVE-2026-2004. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in PostgreSQL up to 14.20/15.15/16.11/17.7/18.1. This affects some unknown processing of the component intarray Extension. The manipulation with an unknown input leads to a improper validation of specified type of input vulnerability. CWE is classifying the issue as CWE-1287. The product receives input that is expected to be of a certain type, but it does not validate or incorrectly validates that the input is actually of the expected type. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at postgresql.org. This vulnerability is uniquely identified as CVE-2026-2004 since 02/05/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 298886 (Linux Distros Unpatched Vulnerability : CVE-2026-2004), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 14.21, 15.16, 16.12, 17.8 or 18.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (298886) and CERT Bund (WID-SEC-2026-0409). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source PostgreSQL

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (PostgreSQL): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper validation of specified type of input
CWE: CWE-1287 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 298886
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-2004

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: PostgreSQL 14.21/15.16/16.12/17.8/18.2

Timelineinfo

02/05/2026 CVE reserved
02/12/2026 +7 days Advisory disclosed
02/12/2026 +0 days VulDB entry created
03/08/2026 +24 days VulDB entry last update

Sourcesinfo

Product: postgresql.org

Advisory: postgresql.org
Status: Confirmed

CVE: CVE-2026-2004 (🔒)
GCVE (CVE): GCVE-0-2026-2004
GCVE (VulDB): GCVE-100-345771
CERT Bund: WID-SEC-2026-0409 - PostgreSQL: Mehrere Schwachstellen

Entryinfo

Created: 02/12/2026 14:32
Updated: 03/08/2026 21:02
Changes: 02/12/2026 14:32 (63), 02/13/2026 08:34 (2), 02/16/2026 12:30 (7), 03/08/2026 21:02 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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