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PostgreSQL CVE-2026-6471

| EUVDEUVD-2026-57857 HIGH
Missing Authorization (CWE-862)
2026-08-13 f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 GHSA-r26j-h78w-pjqm
PostgreSQL Authentication Bypass RCE
7.2
CVSS 3.1 · Vendor: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
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Severity by source

Vendor (f86ef6dc-4d3a-42ad-8f28-e6d5547a5007) PRIMARY
7.2 HIGH
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
9.1 CRITICAL

S:C chosen over provided S:U because dlopen-based RCE as the postgres OS account inherently affects the host system beyond the database scope; all other metrics match the provided vector.

3.1 AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SUSE
HIGH
qualitative

Primary rating from Vendor (f86ef6dc-4d3a-42ad-8f28-e6d5547a5007).

CVSS VectorVendor: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Patch available
Aug 13, 2026 - 14:02 EUVD
Analysis Generated
Aug 13, 2026 - 13:44 vuln.today
CVE Published
Aug 13, 2026 - 13:19 cve.org
HIGH 7.2

DescriptionCVE.org

Missing authorization in PostgreSQL logical decoding allows a non-superuser holding REPLICATION privilege to dlopen any file visible to the operating system account running the server, via the choice of logical decoding plugin. This in turn runs arbitrary code as that account. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

Articles & Coverage 2

News 18 New PostgreSQL Vulnerabilities - 18 High Severity, No POC Available Aug 14, 2026 News 18 New PostgreSQL Vulnerabilities - 18 High Severity, No POC Available Aug 13, 2026

AnalysisAI

Remote code execution in PostgreSQL logical decoding (versions before 18.5, 17.11, 16.15, 15.19, and 14.24) allows any database user holding REPLICATION privilege - a role explicitly below superuser - to load arbitrary shared libraries via dlopen by specifying a malicious logical decoding plugin name, executing arbitrary code as the OS account running the server. This is a missing authorization flaw (CWE-862): the REPLICATION privilege was not intended to grant the ability to load native code. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated PostgreSQL database connection where the connecting role has been explicitly granted the REPLICATION attribute (via CREATE ROLE ... … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.2 score (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H) reflects the high-privilege prerequisite (PR:H - REPLICATION role) that significantly constrains the attack surface compared to an unauthenticated vector. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade to the fixed releases: PostgreSQL 18.5, 17.11, 16.15, 15.19, or 14.24, depending on the deployed major version branch. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, audit all PostgreSQL user accounts with REPLICATION privilege by querying pg_roles and pg_auth_members to identify non-superuser accounts. …

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected

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CVE-2026-6471 vulnerability details – vuln.today
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