CVE-2026-44477

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Source
https://cve.org/CVERecord?id=CVE-2026-44477
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44477.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-44477
Aliases
Downstream
Related
Published
2026-05-28T15:46:12.241Z
Modified
2026-07-08T08:15:34.024775526Z
Severity
  • 9.4 (Critical) CVSS_V4 - 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 CVSS Calculator
Summary
CloudNativePG: Metrics exporter allows privilege escalation to PostgreSQL superuser and OS RCE
Details

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 pgmonitor. SET ROLE changes only currentuser; session_user remains postgres. Any SQL expression evaluated inside the scrape session can invoke RESET ROLE to recover real superuser privileges, then use COPY ... TO PROGRAM to spawn an OS-level subprocess as the postgres user inside the primary pod. The READ ONLY transaction flag does not block this; it gates writes to database state, not external processes. This vulnerability is fixed in 1.29.1 and 1.28.3.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44477.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-250",
        "CWE-271",
        "CWE-426"
    ]
}
References

Affected packages

Git / github.com/cloudnative-pg/cloudnative-pg

Affected ranges

Type
GIT
Repo
https://github.com/cloudnative-pg/cloudnative-pg
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
d0ce8ac4a6e58154520e8614025bfb1f2aa216f1
Introduced
23eae00cd7aad82978397798dd27b600eb25ae3d
Fixed
a4060c152630c9e8958e17d3d23f26b4eb30b69f
Database specific 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:linuxfoundation:cloudnativepg:*:*:*:*:*:kubernetes:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.28.3"
        },
        {
            "introduced": "1.29.0"
        },
        {
            "fixed": "1.29.1"
        }
    ]
}

Affected versions

v0.*
v0.0.1
v0.1.0
v0.2.0
v0.3.0
v0.4.0
v0.5.0
v0.6.0
v0.7.0
v0.8.0
v1.*
v1.0.0
v1.1.0
v1.10.0
v1.11.0
v1.12.0
v1.13.0
v1.14.0
v1.15.0
v1.15.1
v1.17.0
v1.18.0
v1.19.0
v1.2.0
v1.2.1
v1.20.0
v1.21.0
v1.23.0
v1.24.0
v1.24.0-rc1
v1.25.0
v1.25.0-rc1
v1.26.0
v1.26.0-rc1
v1.26.0-rc2
v1.26.0-rc3
v1.27.0
v1.27.0-rc1
v1.28.0
v1.28.0-rc1
v1.28.0-rc2
v1.28.1
v1.28.2
v1.29.0
v1.3.0
v1.4.0
v1.5.0
v1.5.1
v1.6.0
v1.7.0
v1.7.1
v1.8.0
v1.9.0
v1.9.1
v1.9.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44477.json"