HIGH

CVE-2026-16239

CVSS v3

8.8

HIGH

EPSS Score

0.7 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

postgresqlBitnamiall versions · fixed in 14.24.0
pg_repackAlmaLinux:9all versions · fixed in 1.4.8-2.module_el9.5.0+119+18833d03
pg_repackAlmaLinux:8all versions · fixed in 1.4.6-3.module_el8.9.0+3704+f1f917ce
pgauditAlmaLinux:9all versions · fixed in 1.7.0-1.module_el9.3.0+52+21733919
pgauditAlmaLinux:8all versions · fixed in 1.4.0-7.module_el8.9.0+3740+0e74851f.alma.1
pgvectorAlmaLinux:9all versions · fixed in 0.8.1-1.module_el9.8.0+234+5456f35d
postgisAlmaLinux:9all versions · fixed in 3.6.1-4.module_el9.8.0+310+22372bccand 4 other packages
postgres-decoderbufsAlmaLinux:9all versions · fixed in 1.9.7-1.Final.module_el9.3.0+52+21733919

6 more package ranges on OSV.dev

Vendor advisories

CVE-2026-16239 Red Hat Product Security3,205 products fixed · 11 known affected
postgresql: PostgreSQL: Arbitrary code execution via type confusion in cursor lifecycle
postgresql as a component of Red Hat Enterprise Linux 6 · postgresql-contrib as a component of Red Hat Enterprise Linux 6 · postgresql-devel as a component of Red Hat Enterprise Linux 6
RHSA-2026:84585 Red Hat Product Security75 products fixed
Red Hat Security Advisory: postgresql security update
RHSA-2026:73912 Red Hat Product Security158 products fixed
Red Hat Security Advisory: postgresql:12 security update
RHSA-2026:73404 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Ansible automation portal Red Hat Enterprise Linux Images
RHSA-2026:72361 Red Hat Product Security85 products fixed
Red Hat Security Advisory: postgresql security update
RHSA-2026:72363 Red Hat Product Security175 products fixed
Red Hat Security Advisory: postgresql:12 security update

20 more advisories

Full record on NVD

Description

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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2026-08-13
Last Modified: 2026-08-14

Frequently asked questions

What is CVE-2026-16239?

Is CVE-2026-16239 actively exploited?

Active exploitation of CVE-2026-16239 has not been confirmed. Its EPSS score was 0.7% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-16239?

CVE-2026-16239 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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