CVE-2023-39418

Name: CVE-2023-39418
Creator: NVD / NIST
Published: 2023-08-11T13:15:09.963+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.96%

Last modified Jun 17, 2026

CVE-2023-39418 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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.. EPSS estimates a 0.96% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.96%

57.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1220

Affected Software

Vendor	Product	Versions
Postgresql	Postgresql	>= 15.0, < 15.4
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux	9.0
Debian	Debian Linux	12.0

References

https://access.redhat.com/errata/RHSA-2023:7785Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7883Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7884Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7885Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-39418Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2228112Issue Tracking, Patch, Third Party Advisory
https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=cb2ae5741f2458a474ed3c31458d242e678ff229Mailing List, Patch
https://www.postgresql.org/support/security/CVE-2023-39418/Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:7785Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7883Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7884Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7885Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-39418Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2228112Issue Tracking, Patch, Third Party Advisory
https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=cb2ae5741f2458a474ed3c31458d242e678ff229Mailing List, Patch
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

Timeline

Published: Aug 11, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39418?

How severe is CVE-2023-39418?

CVE-2023-39418 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.96% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39418?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-39418?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST