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TI-2026-44245 Aliases CVE-2026-61820

pg_partman privilege escalation via SQL injection when inheriting template properties

Priority MEDIUM 40CWE-89Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-89.

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 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00729 54th 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
Total

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-2026-61820
  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-2026-44244 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-2026-44246 pg_partman authorization bypass to move child tables between schemas during retention 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