{"id":"CVE-2026-61821","aliases":["DEBIAN-CVE-2026-61821","EUVD-2026-83425","GHSA-pxp2-x8cf-rfhc","UBUNTU-CVE-2026-61821"],"status":"published","title":"pg_partman authorization bypass to move child tables between schemas during retention","description":"pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and accept any nonempty schema name. A role with partman_user access can select a target schema where the role lacks the normal CREATE privilege, and the background worker performs the relocation with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, bypassing the authorization check that a normal ALTER TABLE SET SCHEMA operation would enforce. This permits unauthorized relocation of retained child tables between schemas. This issue is fixed in version 5.5.0.","severity":{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00379,"percentile":0.32284,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-862"],"published":"2026-09-18T19:46:41Z","modified":"2026-10-28T02:30:52Z","fixes":[{"ecosystem":"Debian:14","package":"pg-partman","fixed_in":["5.5.0-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"pg-partman","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.7.2-1","4.7.3-1","4.7.4-2","5.0.0-1","5.0.0-2","5.0.1-1","5.1.0-1","5.1.0-2","5.2.0-1","5.2.1-1","5.2.2-1","5.2.4-1","5.3.0-1","5.3.0~rc1-1","5.3.1-1","5.3.1-2","5.4.0-1","5.4.1-1","5.4.2-1","5.4.3-1","5.5.0-1"]},{"source":"osv","ecosystem":"Debian:13","package":"pg-partman","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.4-1","5.3.0-1","5.3.0~rc1-1","5.3.1-1","5.3.1-2","5.4.0-1","5.4.1-1","5.4.2-1","5.4.3-1","5.5.0-1"]},{"source":"osv","ecosystem":"Debian:14","package":"pg-partman","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.5.0-1"}]}],"versions":["5.2.4-1","5.3.0-1","5.3.0~rc1-1","5.3.1-1","5.3.1-2","5.4.0-1","5.4.1-1","5.4.2-1","5.4.3-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"pg-partman","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.2-1","2.2.2-2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"pg-partman","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.6.3-1","3.1.0-1","3.1.1-1","3.1.2-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"pg-partman","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.0-1","4.2.0-1","4.2.2-1","4.3.0-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"pg-partman","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.1-1","4.6.0-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"pg-partman","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.7.3-1","5.0.0-2","5.0.1-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"pg-partman","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.4-1","5.3.1-2","5.4.0-1","5.4.1-1"]}],"products":[{"vendor":"pgpartman","product":"pg_partman"}],"references":[{"url":"https://github.com/pgpartman/pg_partman/security/advisories/GHSA-pxp2-x8cf-rfhc","tags":["x_refsource_CONFIRM","advisory","report"]},{"url":"https://github.com/pgpartman/pg_partman/commit/ba9405542acf24dd881845b935cab8b165854361","tags":["x_refsource_MISC","fix","report"]},{"url":"https://github.com/pgpartman/pg_partman/releases/tag/v5.5.0","tags":["x_refsource_MISC","web","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61821.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61821","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-61821","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-61821","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-61821","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-61821","title":"pg_partman authorization bypass to move child tables between schemas during retention","description":"pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and accept any nonempty schema name. A role with partman_user access can select a target schema where the role lacks the normal CREATE privilege, and the background worker performs the relocation with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, bypassing the authorization check that a normal ALTER TABLE SET SCHEMA operation would enforce. This permits unauthorized relocation of retained child tables between schemas. This issue is fixed in version 5.5.0.","status":"published","published":"2026-09-18T19:46:41.985Z","modified":"2026-09-19T14:11:36.998Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:19:53.4444Z"}],"euvd":[{"id":"EUVD-2026-83425","description":"pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and accept any nonempty schema name. A role with partman_user access can select a target schema where the role lacks the normal CREATE privilege, and the background worker performs the relocation with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, bypassing the authorization check that a normal ALTER TABLE SET SCHEMA operation would enforce. This permits unauthorized relocation of retained child tables between schemas. This issue is fixed in version 5.5.0.","status":"published","published":"2026-09-18T19:46:41Z","modified":"2026-09-19T14:11:36Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high"}],"updated_at":"2026-11-02T17:28:06.658724Z"}],"nvd":[{"id":"CVE-2026-61821","description":"pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and accept any nonempty schema name. A role with partman_user access can select a target schema where the role lacks the normal CREATE privilege, and the background worker performs the relocation with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, bypassing the authorization check that a normal ALTER TABLE SET SCHEMA operation would enforce. This permits unauthorized relocation of retained child tables between schemas. This issue is fixed in version 5.5.0.","status":"published","published":"2026-09-18T20:17:20.22Z","modified":"2026-09-24T21:22:19.873Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:50.043898Z"}],"osv":[{"id":"CVE-2026-61821","title":"pg_partman authorization bypass to move child tables between schemas during retention","description":"pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and accept any nonempty schema name. A role with partman_user access can select a target schema where the role lacks the normal CREATE privilege, and the background worker performs the relocation with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, bypassing the authorization check that a normal ALTER TABLE SET SCHEMA operation would enforce. This permits unauthorized relocation of retained child tables between schemas. This issue is fixed in version 5.5.0.","status":"published","published":"2026-09-18T19:46:41.985Z","modified":"2026-10-28T02:30:52.951217269Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:45:12.933503Z"},{"id":"DEBIAN-CVE-2026-61821","description":"pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and accept any nonempty schema name. A role with partman_user access can select a target schema where the role lacks the normal CREATE privilege, and the background worker performs the relocation with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, bypassing the authorization check that a normal ALTER TABLE SET SCHEMA operation would enforce. This permits unauthorized relocation of retained child tables between schemas. This issue is fixed in version 5.5.0.","status":"published","published":"2026-09-18T20:17:20.22Z","modified":"2026-09-25T08:47:27.898269268Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:57.932517Z"},{"id":"UBUNTU-CVE-2026-61821","description":"pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and accept any nonempty schema name. A role with partman_user access can select a target schema where the role lacks the normal CREATE privilege, and the background worker performs the relocation with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, bypassing the authorization check that a normal ALTER TABLE SET SCHEMA operation would enforce. This permits unauthorized relocation of retained child tables between schemas. This issue is fixed in version 5.5.0.","status":"published","published":"2026-09-18T20:17:00Z","modified":"2026-09-23T23:31:26Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high"}],"updated_at":"2026-11-02T16:56:43.630667Z"}]}}