CVE-2026-14673: PostgreSQL amcheck does not clear untrusted search path

lowCVSS 3.8CVE-2026-14673

CSIRTS triage

vendor: PostgreSQL product: PostgreSQL Privilege escalation

What: The amcheck extension does not sanitize the search path, allowing execution of untrusted code during privilege escalation checks.
Who is affected: PostgreSQL deployments with amcheck extension enabled.
Urgency: Low priority; requires local access and is not actively exploited.
Action: Apply PostgreSQL security update that clears untrusted search path in amcheck.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: low — CVSS 3.8
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-14673

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-146730.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-14673	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

high[NEW] [high] PostgreSQL: Multiple vulnerabilitiescert-bund
unknownUSN-8653-1: PostgreSQL vulnerabilitiesubuntu
unknownMultiple vulnerabilities in PostgreSQL (August 14, 2026)cert-fr-avis
lowCVE-2026-14673: Untrusted search path in PostgreSQL amcheck allows a grantee of amcheck function EXECUTE privi…nvd

Recent advisories for PostgreSQL amcheck does

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

lowCVE-2026-14673: Untrusted search path in PostgreSQL amcheck allows a grantee of amcheck function EXECUTE privi…nvd · 2026-08-13