Cyber Resilience

CVE-2026-6476

High

Published: 14 May 2026

Published
14 May 2026
Modified
18 May 2026
KEV Added
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Patch
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CVSS Score v3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0003 10.7th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-6476 is a high-severity SQL Injection (CWE-89) vulnerability in Postgresql Postgresql. Its CVSS base score is 7.2 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 10.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

affected. Versions before PostgreSQL 17 are unaffected.

CWE(s)
CWE-89

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

SQL injection (CWE-89) directly enables privilege escalation from limited rights to superuser SQL execution (T1068); also facilitates initial access via exploitation of a database service (T1190).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

CVEs Like This One

CVE-2026-6637Same product: Postgresql Postgresql
CVE-2026-6473Same product: Postgresql Postgresql
CVE-2026-2007Same product: Postgresql Postgresql
CVE-2026-2004Same product: Postgresql Postgresql
CVE-2026-2006Same product: Postgresql Postgresql
CVE-2026-2005Same product: Postgresql Postgresql
CVE-2026-6479Same product: Postgresql Postgresql
CVE-2026-6477Same product: Postgresql Postgresql
CVE-2026-6475Same product: Postgresql Postgresql
CVE-2026-29206Shared CWE-89

Affected Assets

postgresql
postgresql
17.0 — 17.10 · 18.0 — 18.4

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-89

Penetration testing uses SQL injection payloads against database interfaces, identifying and supporting fixes for SQL injection weaknesses.

SI-10 Information Input Validation
addresses: CWE-89

Validates query inputs to prevent SQL syntax or command manipulation.

References