Description
Heap-based buffer overflow in PostgreSQL foreign batch inserts allows a foreign server to execute arbitrary code, via reporting that it inserted more rows than the server supplied. postgres_fdw can legitimately encounter this when a rule on the remote table expands an INSERT into additional rows. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.
Published: 2026-11-12
Score: 8.8 High
EPSS: n/a
KEV: No
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History

Thu, 12 Nov 2026 14:30:00 +0000

Type Values Removed Values Added
Description Heap-based buffer overflow in PostgreSQL foreign batch inserts allows a foreign server to execute arbitrary code, via reporting that it inserted more rows than the server supplied. postgres_fdw can legitimately encounter this when a rule on the remote table expands an INSERT into additional rows. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.
Title PostgreSQL FDW batch-insert mismatch executes arbitrary code
Weaknesses CWE-122
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: PostgreSQL

Published:

Updated: 2026-11-12T14:15:26.749Z

Reserved: 2026-10-30T22:45:08.383Z

Link: CVE-2026-120149

cve-icon Vulnrichment

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cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-12T15:17:43.567

Modified: 2026-11-12T19:02:35.830

Link: CVE-2026-120149

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses