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PostgreSQL CVE-2026-18408

| EUVDEUVD-2026-57852 HIGH
Inclusion of Functionality from Untrusted Control Sphere (CWE-829)
2026-08-13 f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 GHSA-p745-282f-cxpr
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:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI
8.8 HIGH

AV:N reflects network dump delivery; PR:N applies because attacker controls origin server independently; UI:R captures mandatory victim restore action; full C/I/A impact from OS-level RCE on restoring client.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/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

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Patch available
Aug 13, 2026 - 14:02 EUVD
Analysis Generated
Aug 13, 2026 - 13:41 vuln.today
CVE Published
Aug 13, 2026 - 13:17 cve.org
HIGH 8.8

DescriptionCVE.org

Untrusted data inclusion in pg_dump in PostgreSQL allows a malicious superuser of the origin server to inject arbitrary code for restore-time execution as the client operating system account running psql to restore the dump, via psql \restrict meta-command input expansion. The fix for CVE-2025-8714 introduced \restrict and \unrestrict to block this attack, but \unrestrict itself was sufficient for an attack. pg_dumpall is also affected. pg_restore is affected when used to generate a plain-format dump. Non-core use of \restrict would be affected, but we've not identified non-core use. 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

Code injection in PostgreSQL's pg_dump, pg_dumpall, and pg_restore (plain-format mode) allows a malicious superuser of an origin database server to embed arbitrary OS-level commands into a dump file, which execute on the restoring client's operating system account when psql processes the dump. This is a confirmed bypass of the CVE-2025-8714 patch: the \unrestrict meta-command introduced by that fix is itself exploitable via psql meta-command input expansion, negating the protection that \restrict was intended to provide. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation The victim must use psql to restore a dump file generated by pg_dump, pg_dumpall, or pg_restore (in plain-format output mode) from a PostgreSQL server where the attacker holds a superuser account. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 8.8 score (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) accurately characterizes the high blast radius: successful exploitation yields full confidentiality, integrity, and availability compromise of the restoring client system. … 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 patched release for your PostgreSQL major version: 18.5, 17.11, 16.15, 15.19, or 14.24, as documented at https://www.postgresql.org/support/security/CVE-2026-18408/. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, conduct an immediate audit of all PostgreSQL installations to identify systems running pg_dump, pg_dumpall, or pg_restore, and document the source and trustworthiness status of all database dumps in use or scheduled for restoration. …

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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-2026-18408 vulnerability details – vuln.today
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