CVE-2026-16237
Received
Received - Intake
Privilege Escalation in PostgreSQL via ON CONFLICT Clause
Vulnerability report for CVE-2026-16237, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-11-12
Last updated on: 2026-11-12
Assigner: PostgreSQL
Description
Description
Improper protection in PostgreSQL INSERT ... ON CONFLICT on auto-updatable views allows an attacker having INSERT and UPDATE privileges on the view to read and modify every row in the view's base table, via iterated INSERT ... ON CONFLICT DO UPDATE. This bypasses the view's WHERE condition, whether or not the view is a security_barrier view. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| postgresql | postgresql | to 18.7 (exc) |
| postgresql | postgresql | to 17.12 (exc) |
| postgresql | postgresql | to 16.16 (exc) |
| postgresql | postgresql | to 15.20 (exc) |
| postgresql | postgresql | to 14.25 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-424 | The product does not sufficiently protect all possible paths that a user can take to access restricted functionality or resources. |
