CVE-2023-39418

LOWNVD 3.13.1—
EchelonGraph scoreMEDIUM confidence

Score 3.1 from GitHub Security Advisory published 2023-08-11. NVD baseline CVSS 3.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
3.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 3.1Exploit: NoneExposed: 0

A fix is available — apply it.

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 v3
3.1
EG Score
3.1(medium)
EPSS
57.2%
KEV
Not listed

Published

August 11, 2023

Last Modified

December 6, 2024

References (18)

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntupostgresql-server-dev-15 (15.4-0ubuntu0.23.04.1) @ lunar2026-05-24ubuntu
redhatpostgresql:15-8090020231114113548.a75119d52023-12-20redhat
redhatpostgresql:15-8080020231113134015.63b345852023-12-20redhat
redhatpostgresql:15-9020020231115020618.rhel92023-12-20redhat
redhatpostgresql:15-9030020231120082734.rhel92023-12-13redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 08:26 UTCEPSS rescore
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  18. 2026-06-27 13:04 UTCOSV refresh
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  1. 2026-06-23 21:31 UTCEPSS rescore
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  24. 2026-06-10 22:17 UTCEPSS rescore
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  27. 2026-06-09 23:47 UTCOSV refresh
  28. 2026-06-08 14:16 UTCEPSS rescore
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  30. 2026-06-07 15:23 UTCEPSS rescore
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  43. 2026-06-01 13:51 UTCEPSS rescore
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  45. 2026-05-31 22:30 UTCEPSS rescore
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  49. 2026-05-29 13:43 UTCEPSS rescore
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  58. 2026-05-26 07:18 UTCEPSS rescore
  59. 2026-05-24 19:32 UTCEG score recompute
  60. 2026-05-24 19:32 UTCVendor advisory
  61. 2026-05-24 19:32 UTCGHSA enrichment
  62. 2026-05-24 16:52 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-39418?
CVE-2023-39418 is a low vulnerability published on August 11, 2023. 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.
When was CVE-2023-39418 disclosed?
CVE-2023-39418 was first published in the National Vulnerability Database on August 11, 2023, with the most recent update on December 6, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-39418 actively exploited?
CVE-2023-39418 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 57.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-39418?
CVE-2023-39418 has a CVSS v3 base score of 3.1 (NVD).
How do I remediate CVE-2023-39418?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-39418, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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