VDB-363873 · CVE-2026-6476 · Nessus 315292

PostgreSQL up to 17.9/18.3 sql injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in PostgreSQL up to 17.9/18.3. This issue affects some unknown processing. Performing a manipulation results in sql injection. This vulnerability was named CVE-2026-6476. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in PostgreSQL up to 17.9/18.3. This affects some unknown processing. The manipulation with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

SQL injection in PostgreSQL pg_createsubscriber allows an attacker with pg_create_subscription rights to execute arbitrary SQL as a superuser. The attack takes effect when pg_createsubscriber next runs. Within major versions 17 and 18, minor versions before PostgreSQL 18.4 and 17.10 are affected. Versions before PostgreSQL 17 are unaffected.

The advisory is shared at postgresql.org. This vulnerability is uniquely identified as CVE-2026-6476 since 04/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are necessary for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1505 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 315292 (SUSE SLES12 Security Update : postgresql18 (SUSE-SU-2026:1946-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 17.10 or 18.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (315292) and CERT Bund (WID-SEC-2026-1544). 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
IBM QRadar SIEM

Productinfo

Type

Database Software

Name

PostgreSQL

Version

License

open-source

Website

Product: https://www.postgresql.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.2
CNA Vector (PostgreSQL): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Sql injection
CWE: CWE-89 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 315292
Nessus Name: SUSE SLES12 Security Update : postgresql18 (SUSE-SU-2026:1946-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: PostgreSQL 17.10/18.4

Timelineinfo

04/17/2026 CVE reserved
05/14/2026 +27 days Advisory disclosed
05/14/2026 +0 days VulDB entry created
06/25/2026 +42 days VulDB entry last update

Sourcesinfo

Product: postgresql.org

Advisory: postgresql.org
Status: Confirmed

CVE: CVE-2026-6476 (🔒)
GCVE (CVE): GCVE-0-2026-6476
GCVE (VulDB): GCVE-100-363873
CERT Bund: WID-SEC-2026-1544 - PostgreSQL: Mehrere Schwachstellen

Entryinfo

Created: 05/14/2026 15:49
Updated: 06/25/2026 15:45
Changes: 05/14/2026 15:49 (63), 05/16/2026 00:14 (7), 05/19/2026 15:19 (2), 05/28/2026 10:16 (1), 06/15/2026 15:33 (1), 06/25/2026 15:45 (1)
Complete: 🔍
Cache ID: 216::103

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