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TI-2026-44246 Aliases CVE-2026-61821

pg_partman authorization bypass to move child tables between schemas during retention

Priority LOW 37CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00379 32nd percentileScored 2026-11-07
Fix Fixed pg_partman (pgpartman): 5.5.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
pgpartmanpg_partmanbefore 5.5.05.5.0Patch availableCNA
  • pg_partman Vendorpgpartman Affected before 5.5.0 Fixed in 5.5.0 Patch available CNA

Remediation

  • Fix · CNA pg_partman (pgpartman) Fixed in 5.5.0

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-61821
  2. 2026-10-31 CVSS score changed · Red Hat

References

Other 3

  • TI-2026-44224 pg_partman has privilege escalation through SQL injection in create_partition_time() CVSS 3.1CRITICAL 9.9
  • TI-2026-44245 pg_partman privilege escalation via SQL injection when inheriting template properties CVSS 3.1HIGH 8.5
  • TI-2026-44244 pg_partman privilege escalation via SQL injection in when using pg_jobmon and encountering exception CVSS 3.1HIGH 8.5
  • TI-2026-44242 pg_partman privilege escalation via SQL injection in several functions via time decoder CVSS 3.1HIGH 8.5
  • TI-2026-44243 pg_partman SQL injection in undo partition time encoder CVSS 3.1HIGH 8.5
  • TI-2026-44247 pg_partman disable maintenance for all partition sets CVSS 3.1MEDIUM 6.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences