{"id":"CVE-2026-61820","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, inherit_template_properties() manually surrounds primary-key column names from pg_attribute.attname with double quotes without escaping e…","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":"2026-09-23","sourceUpdated":"2026-09-23T18:28:25.093","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-61820","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-xqxh-6hh3-974m","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"epss":0.00581,"epssPercentile":0.46513,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-22T15:39:28.982624Z"},"ingestedAt":"2026-09-18T20:51:25.677Z","slug":"CVE-2026-61820","body":"## Overview\n\npg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, inherit_template_properties() manually surrounds primary-key column names from pg_attribute.attname with double quotes without escaping embedded double-quote characters. A partman_user who owns a template table can create a crafted column name that breaks out of the generated ALTER TABLE ADD PRIMARY KEY identifier when the background worker applies the key to a child partition. The generated SQL then executes with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, permitting database-wide compromise and operating-system command execution as the PostgreSQL service account. The crafted catalog identifier persists until removed and can trigger again during later partition creation. 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":[]}