CVE-2026-44477: CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments

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CRITICAL 9.9WATCHLISTUPGRADE

CVE-2026-44477 is a critical-severity flaw (CVSS 9.9) affecting cloudnativepg. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.29.1 and 1.28.3, the CloudNativePG metrics exporter opens its PostgreSQL connection as the postgres superuser via the pod-local Unix socket, then demotes the session with SET ROLE pg_monitor. SET ROLE changes only current_user; session_user remains postgres. Any SQL expression evaluated inside the scrape session can invoke RESET ROLE to

Why this priority

Critical severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.9 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-250, CWE-271, CWE-426
Published	2026-05-28
Last modified	2026-07-15

Publisher (CNA): GitHub, Inc. · Vendor: linuxfoundation

Last updated 2026-07-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-28 17:16 UTCPublished CVE record published
2026-07-15 02:21 UTCUpdated Record last modified

linuxfoundation cloudnativepg UPGRADE

Affected: < 1.28.3 · >= 1.29.0 and < 1.29.1

Fixed in: 1.28.3, 1.29.1

Safe to downgrade to: a release before 1.29.0

1. Check installed version

apt-cache policy cloudnativepg || rpm -q cloudnativepg || cloudnativepg --version

2. UPGRADE to 1.28.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cloudnativepg

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cloudnativepg

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.29.0 (Debian / Ubuntu)

apt-cache madison cloudnativepg sudo apt install cloudnativepg=<VERSION_BEFORE_1.29.0> sudo apt-mark hold cloudnativepg

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list cloudnativepg sudo dnf downgrade cloudnativepg-<VERSION_BEFORE_1.29.0> sudo dnf versionlock add cloudnativepg

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-44477?

cloudnativepg: upgrade to 1.28.3, 1.29.1. Exact commands for each OS are on this page.

Is CVE-2026-44477 being exploited?

CVE-2026-44477 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-44477 affect?

CVE-2026-44477 affects cloudnativepg. Severity is critical (CVSS 9.9). CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.29.1 and 1.28.3, the CloudNativePG metrics exporter opens its PostgreSQL connection as the postgres superuser via the pod-local U

How urgent is CVE-2026-44477?

Priority 50/100. Critical severity; On your watchlist

Software pages

Kubernetes vulnerabilities · PostgreSQL vulnerabilities

References

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