8.8

CVE-2026-16238: postgresql Type Confusion

CVSS: 8.8v3.1HighModified
AliasesALPINE-CVE-2026-16238UBUNTU-CVE-2026-16238DEBIAN-CVE-2026-16238
Published 13-08-2026Last modified 29-08-2026
Open JSON

Vulnerability summary

CVE-2026-16238 is a high (CVSS 8.8) Type Confusion vulnerability in postgresql. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 34.3% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.41%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 10 · Related 7
MGASA-2026-0347OPENSUSE-SU-2026:11565-1OPENSUSE-SU-2026:21703-1RHSA-2026:67280RHSA-2026:67848SUSE-SU-2026:23577-1

Timeline

  1. 13-08-2026
    PublishedVulnerability first disclosed.
  2. 29-08-2026
    Last modifiedVulnerability information updated.

Description

Type confusion in PostgreSQL pg_restore_attribute_stats() allows an object creator to execute arbitrary code as the operating system user running the database, via conflation of range and multirange values. Within major version 18, minor versions before PostgreSQL 18.6 are affected. Versions before PostgreSQL 18 are unaffected.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

0.00 pp

From 0.41% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.41%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Alpine3 products
  • postgresql16< 16.15-r0
  • postgresql17< 17.11-r0
  • postgresql18< 18.5-r0
Ubuntu2 products
  • postgresql-18< 18.6-0ubuntu0.26.04.1
  • postgresql-9.3All versions (No fix recorded)
Debian1 product
  • postgresql-18< 18.6-1
Postgresql1 product
  • postgresql≥ 14.0, < 14.24 | ≥ 15.0, < 15.19 | ≥ 16.0, < 16.15 | ≥ 17.0, < 17.11 | ≥ 18.0, < 18.5

4 vendors · 7 products

References

7 links