Skip to content

CVE-20XX-?

CVE-2026-16239

8.8 HIGH 0.7% exploit odds Fix listed Code execution Server

What it is

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 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

At a glance

Exploitability: Can be exploited over the network with a low-privilege account. High risk of data exposure, data tampering, service disruption.
Exploit odds: 0.7% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-08-13 13:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-08-29 23:17 UTC Last updatedMost recent change to the record

Details

Published: 2026-08-13 13:17 UTC
Last modified: 2026-08-29 23:17 UTC
Exploit probability: 0.7% · EPSS, next 30 days
Weakness: CWE-843
Record status: Modified

Affected

PostgreSQL < 14.24
PostgreSQL < 15.19
PostgreSQL < 16.15
PostgreSQL < 17.11
PostgreSQL < 18.5

Attack profile CVSS 3.1 · 8.8

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Meme: I wake up, CVE-2026-16239

Download Square Reddit

Fix and advisories

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

References

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

NVD record · CVE.org record