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PostgreSQL EUVDEUVD-2026-57849

| CVE-2026-16239 HIGH
Access of Resource Using Incompatible Type (Type Confusion) (CWE-843)
2026-08-13 f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 GHSA-m6g7-vvh9-445r
Memory Corruption PostgreSQL RCE
8.8
CVSS 3.1 · Vendor: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
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Severity by source

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

Network-reachable via standard SQL connection (AV:N/AC:L); any authenticated low-privilege user triggers it (PR:L/UI:N); full OS-user-level code execution yields C:H/I:H/A:H within the unchanged scope of the postgres process (S:U).

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

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

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

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
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 - 13:40 vuln.today
CVE Published
Aug 13, 2026 - 13:17 cve.org
HIGH 8.8

DescriptionCVE.org

Type confusion in PostgreSQL "portal"/cursor lifecycle allows a user to execute arbitrary code as the operating system user running the database, via re-creation of a cursor or other portal with different types. 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's portal/cursor subsystem allows any authenticated database user to execute arbitrary code as the OS-level process owner (typically 'postgres') by re-creating a named cursor with an incompatible result type. All actively supported major branches are affected - versions prior to 14.24, 15.19, 16.15, 17.11, and 18.5. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid PostgreSQL database credential - any account holding LOGIN privilege and CONNECT access to the target database is sufficient; no superuser, schema-owner, or elevated role is needed. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The NVD-assigned CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, score 8.8) accurately reflects the attack profile: the vulnerability is reachable over the network, requires low complexity, demands only a low-privileged authenticated session, and results in full confidentiality, integrity, and availability compromise of the database process. … 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 PostgreSQL 18.5, 17.11, 16.15, 15.19, or 14.24 - the first patched releases in each supported major branch - as documented in the official security advisory at https://www.postgresql.org/support/security/CVE-2026-16239/. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, complete a comprehensive inventory of all PostgreSQL deployments and identify instances running vulnerable versions (14.x prior to 14.24, 15.x prior to 15.19, 16.x prior to 16.15, 17.x prior to 17.11, 18.x prior to 18.5); immediately audit and remove all non-essential database user accounts, retaining only essential administrative and application service credentials. …

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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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EUVD-2026-57849 vulnerability details – vuln.today
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