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Vulnerability record · CVE-2023-39418 · published 11 August 2023

CVE-2023-39418: Postgresql vulnerability

Postgresql · Postgresql

A vulnerability was found in PostgreSQL with the use of the MERGE command, which fails to test new rows against row security policies defined for UPDATE and SELECT. If UPDATE and SELECT policies forbid some rows that INSERT policies do not forbid, a user could store such rows.

4.3 CVSS 3.1 Medium EPSS 1.1% · top 36.4% CWE-1220 · CWE-1220
4.3CVSS 3.1 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
18References
17 Jun 2026Last modified by NVD

Description

A vulnerability was found in PostgreSQL with the use of the MERGE command, which fails to test new rows against row security policies defined for UPDATE and SELECT. If UPDATE and SELECT policies forbid some rows that INSERT policies do not forbid, a user could store such rows.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2023:7785 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7883 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7884 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7885 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-39418 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2228112 Issue TrackingPatchThird Party Advisory
https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=cb2ae5741f2458a474ed3c31458d242e678ff229 Mailing ListPatch
https://www.postgresql.org/support/security/CVE-2023-39418/ Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:7785 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7883 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7884 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7885 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-39418 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2228112 Issue TrackingPatchThird Party Advisory
https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=cb2ae5741f2458a474ed3c31458d242e678ff229 Mailing ListPatch
https://security.netapp.com/advisory/ntap-20230915-0002/
https://www.debian.org/security/2023/dsa-5553
https://www.postgresql.org/support/security/CVE-2023-39418/ Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2023-39418), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.