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.
Advisories
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Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Sat, 19 Sep 2026 22:15:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Pgxn
Pgxn pg Partman |
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| Vendors & Products |
Pgxn
Pgxn pg Partman |
Fri, 18 Sep 2026 21:30:00 +0000
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| Description | 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. | |
| Title | pg_partman privilege escalation via SQL injection in several functions via time decoder | |
| Weaknesses | CWE-89 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-19T14:11:36.257Z
Reserved: 2026-07-10T20:17:57.992Z
Link: CVE-2026-61817
No data.
Status : Received
Published: 2026-09-18T20:17:19.163
Modified: 2026-09-19T15:16:59.910
Link: CVE-2026-61817
No data.
OpenCVE Enrichment
Updated: 2026-09-19T22:00:21Z
Weaknesses