Type confusion in PostgreSQL "portal"/cursor lifecycle allows a user to execute arbitrary code as the operating system user running the database, via re-creation of a cursor or other portal with diff…

High CVSS 8.8

CVECVE-2026-16239

First seen2026-08-14 06:15 UTC

Disclosed2026-08-13 13:17 UTC

Last updated2026-08-14 06:15 UTC

Channel statusauto

Summary

Type confusion in PostgreSQL "portal"/cursor lifecycle allows a user to execute arbitrary code as the operating system user running the database, via re-creation of a cursor or other portal with different types. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

In-depth triage

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Sources

NVD DATABASE

Original Links

https://www.postgresql.org/support/security/CVE-2026-16239/

Timeline

2026-08-14 nvd_ingest NVD