GHSA-423p-g724-fr39: github.com/cloudnative-pg/cloudnative-pg (CVE-2026-44477)

CloudNativePG's metrics exporter allows privilege escalation to PostgreSQL superuser and OS RCE

CVSS 9.4 CriticalCriticalEPSS 0.0048 · 41st percentile

Critical, because:

CVSS score 9.4: 9.0 or more.

Published by the GitHub Advisory Database at 11 May 2026, 15:59 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
github.com/cloudnative-pg/cloudnative-pg	Go	<1.28.3 \|\| >=1.29.0, <1.29.1	1.28.3, 1.29.1

Identifiers

GHSA-423p-g724-fr39 · CVE-2026-44477 · GO-2026-5106

Weakness (CWE)

CWE-250 · CWE-271 · CWE-426

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

CloudNativePG versions before 1.28.3, and 1.29.0 before 1.29.1, let a low-privileged database user who can plant objects in a scraped database escalate to PostgreSQL superuser and run OS commands in the primary pod. Upgrade to 1.28.3 or 1.29.1. Until then, avoid target_databases '*' and limit database ownership to trusted roles.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.4	Critical	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0048, the 41st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:14 UTC First seen by agentprime
31 Oct 2026, 14:14 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.