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CVE-2026-61781: Product identification pending

Severity

9.9 (CRITICAL)

Affected versions

Before 5.5.0

Fixed version

5.5.0.

Patch status

Patched

Published

2026-09-18T20:17:19.003

Modified

2026-09-18T21:17:02.257

Why it matters

Critical vulnerability requiring immediate validation against your environment.

Recommended admin actions

• Prioritize validation immediately due to critical CVSS severity.
• Compare installed versions against the affected version range in the advisory.

Technical summary

pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, create_partition_time() reads the writable part_config.time_encoder text value and interpolates it without identifier quoting into a dynamically executed SELECT statement. A role with the documented partman_user INSERT and UPDATE privileges can store SQL rather than a function name. When pg_partman_bgw later creates a child partition for a text- or UUID-keyed set, the worker executes the stored SQL with pg_partman_bgw.role privileges, which default to PostgreSQL superuser. The persistent configuration row can repeatedly restore elevated access on later maintenance 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.

View the official NVD record for CVE-2026-61781

CVE data is sourced from NVD/CNA records and optional enrichment. Validate against the vendor advisory before taking production action.