PostgreSQL up to 18.1 oidvector improper validation of specified type of input

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in PostgreSQL up to 14.20/15.15/16.11/17.7/18.1. The affected element is an unknown function of the component oidvector Handler. This manipulation causes improper validation of specified type of input. The identification of this vulnerability is CVE-2026-2003. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in PostgreSQL up to 14.20/15.15/16.11/17.7/18.1. It has been declared as problematic. Affected by this vulnerability is an unknown code of the component oidvector Handler. The manipulation with an unknown input leads to a improper validation of specified type of input vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality. The summary by CVE is:

Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

The advisory is shared at postgresql.org. This vulnerability is known as CVE-2026-2003 since 02/05/2026. The exploitation appears to be easy. The attack can be launched remotely. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 298913 (Linux Distros Unpatched Vulnerability : CVE-2026-2003), 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 (298913) and CERT Bund (WID-SEC-2026-0409). Several companies clearly confirm that VulDB is the primary source for best 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: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.3
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: 298913
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-2003

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-2026-2003 (🔒)
GCVE (CVE): GCVE-0-2026-2003
GCVE (VulDB): GCVE-100-345769
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), 02/15/2026 02:49 (2), 02/16/2026 12:30 (7), 03/08/2026 21:02 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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