Type Confusion Vulnerability in PostgreSQL Database Software
CVE-2026-120144

8.8HIGH

Key Information:

Vendor

PostgreSQL
Status
Postgresql
Vendor
CVE Published:
12 November 2026

What is CVE-2026-120144?

A type confusion vulnerability in PostgreSQL arises from improper management of type-cache invalidation, which can potentially allow an attacker to execute arbitrary code under the operating system user context that is running the database. This issue is particularly concerning during composite type changes when the cache entry is being populated. The vulnerability affects specific minor versions of major version 18, specifically those released before PostgreSQL 18.7, while prior versions remain unaffected.

Affected Version(s)

PostgreSQL 18 < 18.7

References

https://www.postgresql.org/support/security/CVE-2026-120144/

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

The PostgreSQL project thanks Peter Geoghegan for reporting this problem.
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