{"id":"CVE-2026-61818","aliases":["GHSA-fm3m-9fh7-mqfc"],"url":"https://o3.security/vulnerability/CVE-2026-61818","summary":"pg_partman SQL injection in undo partition time encoder","details":"pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, undo_partition() reads part_config.time_encoder as unrestricted text and interpolates it without identifier quoting into a dynamically executed SELECT statement. A role with partman_user access can store SQL rather than a function name, and the SQL executes with the privileges of the caller that invokes undo_partition(). The function is not part of the default background-worker path, which limits the automatic superuser escalation described by the related create-partition vulnerability, but a privileged caller can still have its available confidentiality, integrity, and availability permissions abused. This issue is fixed in version 5.5.0.","published":"2026-09-18T19:47:30.083Z","modified":"2026-09-20T11:46:56.815098515Z","cvss":{"score":8.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/pgpartman/pg_partman/commit/ba9405542acf24dd881845b935cab8b165854361","label":"pgpartman/pg_partman@ba94055"},"references":[{"type":"WEB","url":"https://github.com/pgpartman/pg_partman/releases/tag/v5.5.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61818.json"},{"type":"ADVISORY","url":"https://github.com/pgpartman/pg_partman/security/advisories/GHSA-fm3m-9fh7-mqfc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61818"},{"type":"FIX","url":"https://github.com/pgpartman/pg_partman/commit/ba9405542acf24dd881845b935cab8b165854361"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-20T11:46:56.815098515Z"}}