CVE-2026-120141: PostgreSQL type confusion in materialized set-returning functions

CVE-2026-120141 · Severity: high · CVSS 8.8 · Published 2026-11-12

PostgreSQL is a database server that stores and retrieves data for critical business applications. A database user can exploit a type confusion vulnerability in materialized set-returning functions (such as json_populate_recordset) to execute arbitrary code with the privileges of the operating system user running the database server. This could lead to complete compromise of the database and underlying system.

Technologies: PostgreSQL. Vendors: PostgreSQL.

Quick answers

Is CVE-2026-120141 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-120141 being exploited in the wild.
How severe is CVE-2026-120141?
High severity, with a CVSS score of 8.8, published 12 November 2026.
Which products and versions are affected?
PostgreSQL before 14.25, 15.20, 16.16, 17.12, 18.7.
Is there a fix for CVE-2026-120141?
Yes: fixed in PostgreSQL 14.25, 15.20, 16.16, 17.12, 18.7. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-120141 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-120141?
Check whether you run PostgreSQL at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: PostgreSQL 14.25, 15.20, 16.16, 17.12, 18.7

Technical details

A type confusion vulnerability exists in PostgreSQL's materialized set-returning functions when rows with different dynamic RECORD return types are returned. The vulnerability allows an authenticated database user to execute arbitrary code as the OS user running the database via this type confusion mechanism. The issue affects versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25.

Affected products

  • PostgreSQL PostgreSQL before 14.25, 15.20, 16.16, 17.12, 18.7

Timeline

  • 2026-11-12: disclosed
  • 2026-11-12: patched

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.