CVE-2026-61817 PUBLISHED

pg_partman privilege escalation via SQL injection in several functions via time decoder

Assigner: GitHub_M
Reserved: 10.07.2026 Published: 18.09.2026 Updated: 18.09.2026

pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, run_maintenance(), show_partitions(), show_partition_info(), undo_partition(), and partition_data_time() interpolate the writable part_config.time_dncoder text value without identifier quoting into dynamic SQL. A role with the documented partman_user privileges can store SQL rather than a decoder function name. When an affected operation later uses the poisoned value, including pg_partman_bgw maintenance for a text- or UUID-keyed set, the SQL executes with the operation's privileges, which can be the default PostgreSQL superuser background-worker role. The persistent row can restore elevated access on later ticks, and successful exploitation can permit database-wide compromise and operating-system command execution as the PostgreSQL service account. This issue is fixed in version 5.5.0.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS Score: 8.5

Product Status

Vendor pgpartman
Product pg_partman
Versions
  • Version < 5.5.0 is affected

References

Problem Types

  • CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') CWE