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PostgreSQL plperl CVE-2026-14670

| EUVDEUVD-2026-57837 HIGH
Heap-based Buffer Overflow (CWE-122)
2026-08-13 f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 GHSA-hv8p-f6vx-h5x6
RCE PostgreSQL Heap Overflow Buffer Overflow
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

AV:N and PR:L confirmed by description: network-reachable database, low-privilege function owner; full C/I/A impact from OS-level code execution.

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

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

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

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 - 13:34 vuln.today
CVE Published
Aug 13, 2026 - 13:17 cve.org
HIGH 8.8

DescriptionCVE.org

Heap buffer overflow in PostgreSQL plperl return of a tied hash allows the function owner to execute arbitrary code as the operating system user running the database, via a crafted function body. 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

Heap buffer overflow in PostgreSQL's plperl extension allows a database function owner to execute arbitrary code as the OS-level user running the database server by crafting a function body that returns a tied hash. Affected versions span the four active PostgreSQL major release lines prior to 18.5, 17.11, 16.15, 15.19, and 14.24. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Vulnerability AssessmentAI

Exploitation Exploitation requires that: (1) the plperl procedural language is installed and enabled in the target PostgreSQL database ('CREATE EXTENSION plperl' or equivalent has been executed); (2) the attacker holds a database account with the USAGE privilege on the plperl language and the right to CREATE FUNCTION or own an existing plperl function - this is a low-privilege database role, not superuser; (3) the attacker can cause that function to be executed (either by calling it directly or by having it triggered). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS base score of 8.8 (High) is well-supported by the vector: network-accessible, low complexity, low privilege required, with full confidentiality, integrity, and availability impact. … 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 The primary remediation is to upgrade to a patched release: PostgreSQL 18.5, 17.11, 16.15, 15.19, or 14.24, as applicable to the deployed major version. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, identify all PostgreSQL instances with plperl extension enabled and determine which major release lines are deployed (14, 15, 16, 17, or 18). …

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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-2026-14670 vulnerability details – vuln.today
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