CVE-2026-61821
pg_partman authorization bypass to move child tables between schemas during retention
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
8.5
pg_partman authorization bypass to move child tables between schemas during retention
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.
- Record
CVE-2026-61821- CVSS 3.1
- 8.5 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
EUVDEUVD-2026-83425
8.5
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.
- Record
EUVD-2026-83425- CVSS 3.1
- 8.5 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N - Updated
- 2026-11-02
NVD
8.5
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.
- Record
CVE-2026-61821- CVSS 3.1
- 8.5 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
OSV
8.5
pg_partman authorization bypass to move child tables between schemas during retention
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.
- Record
CVE-2026-61821- CVSS 3.1
- 8.5 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-61821
8.5
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.
- Record
DEBIAN-CVE-2026-61821- CVSS 3.1
- 8.5 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-61821
8.5
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.
- Record
UBUNTU-CVE-2026-61821- CVSS 3.1
- 8.5 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
pg-partmanDebian:12 |
All versions, plus listed versions 4.7.2-14.7.3-14.7.4-25.0.0-15.0.0-2 Show 16 moreShow less5.0.1-15.1.0-15.1.0-25.2.0-15.2.1-15.2.2-15.2.4-15.3.0-15.3.0~rc1-15.3.1-15.3.1-25.4.0-15.4.1-15.4.2-15.4.3-15.5.0-1 |
None known |
pg-partmanDebian:13 |
All versions, plus listed versions 5.2.4-15.3.0-15.3.0~rc1-15.3.1-15.3.1-2 Show 5 moreShow less5.4.0-15.4.1-15.4.2-15.4.3-15.5.0-1 |
None known |
pg-partmanDebian:14 |
before 5.5.0-1, plus listed versions 5.2.4-15.3.0-15.3.0~rc1-15.3.1-15.3.1-2 Show 4 moreShow less5.4.0-15.4.1-15.4.2-15.4.3-1 |
5.5.0-1 |
pg-partmanUbuntu:16.04:LTS |
All versions, plus listed versions 2.2.2-12.2.2-2 |
None known |
pg-partmanUbuntu:18.04:LTS |
All versions, plus listed versions 2.6.3-13.1.0-13.1.1-13.1.2-1 |
None known |
pg-partmanUbuntu:20.04:LTS |
All versions, plus listed versions 4.0.0-14.2.0-14.2.2-14.3.0-1 |
None known |
pg-partmanUbuntu:22.04:LTS |
All versions, plus listed versions 4.5.1-14.6.0-1 |
None known |
pg-partmanUbuntu:24.04:LTS |
All versions, plus listed versions 4.7.3-15.0.0-25.0.1-1 |
None known |
pg-partmanUbuntu:26.04:LTS |
All versions, plus listed versions 5.2.4-15.3.1-25.4.0-15.4.1-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-61821 is a high vulnerability (CVSS 8.5) in Pgpartman Pg Partman, published September 18, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 32nd percentile. Fixed in pg-partman 5.5.0-1.
References
github.com/pgpartman/pg_partman/security/advisories/GHSA-pxp2-x8cf-rfhc
github.com/pgpartman/pg_partman/commit/ba9405542acf24dd881845b935cab8b165854361
github.com/pgpartman/pg_partman/releases/tag/v5.5.0
github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61821.json
nvd.nist.gov/vuln/detail/CVE-2026-61821
security-tracker.debian.org/tracker/CVE-2026-61821
ubuntu.com/security/CVE-2026-61821
cve.org/CVERecord?id=CVE-2026-61821