{"id":"CVE-2026-44477","aliases":["GHSA-423p-g724-fr39","GO-2026-5106"],"url":"https://o3.security/vulnerability/CVE-2026-44477","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 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 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.","published":"2026-05-28T15:46:12.241Z","modified":"2026-07-31T18:30:24.911663272Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/cloudnative-pg/cloudnative-pg","fixedVersion":"1.28.3"},{"ecosystem":"Go","name":"github.com/cloudnative-pg/cloudnative-pg","fixedVersion":"1.29.1"}],"fix":{"url":"https://github.com/cloudnative-pg/cloudnative-pg/pull/10576","label":"cloudnative-pg/cloudnative-pg#10576"},"references":[{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44477.json"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-44477"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44477.json"},{"type":"ADVISORY","url":"https://github.com/cloudnative-pg/cloudnative-pg/security/advisories/GHSA-423p-g724-fr39"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44477"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2482763"},{"type":"FIX","url":"https://github.com/cloudnative-pg/cloudnative-pg/pull/10576"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-31T18:30:24.911663272Z"}}