{"id":"CVE-2026-61818","title":"pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID","summary":"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 ex…","severity":"high","cvss":8.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-89"],"vendor":"pgpartman","product":"pg_partman","affected":["pg_partman < 5.5.0"],"published":"2026-09-18","updated":"2026-09-19","sourceUpdated":"2026-09-19T15:17:00.040","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-61818","references":[{"url":"https://github.com/pgpartman/pg_partman/commit/ba9405542acf24dd881845b935cab8b165854361","label":"security-advisories@github.com"},{"url":"https://github.com/pgpartman/pg_partman/releases/tag/v5.5.0","label":"security-advisories@github.com"},{"url":"https://github.com/pgpartman/pg_partman/security/advisories/GHSA-fm3m-9fh7-mqfc","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"epss":0.00409,"epssPercentile":0.34813,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-19T13:37:38.282887Z"},"ingestedAt":"2026-09-18T20:51:25.676Z","slug":"CVE-2026-61818","body":"## Overview\n\npg_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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":47,"depthScoreParts":{"impact":46.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}