Type Confusion Vulnerability in PostgreSQL by PostgreSQL Global Development Group
CVE-2026-14680

8.8HIGH

Key Information:

Vendor

PostgreSQL Global Development Group

Status
Postgresql
Vendor
CVE Published:
13 August 2026

What is CVE-2026-14680?

A type confusion vulnerability exists in PostgreSQL that allows users to execute arbitrary code with the privileges of the database operating system user. This issue arises due to gaps in the system's safeguards against invoking functions with 'internal' data type arguments, which are designed to be mutually incompatible and not intended for SQL access. Attackers can exploit this flaw in affected PostgreSQL versions prior to 18.5, 17.11, 16.15, 15.19, and 14.24, posing significant security risks if not addressed.

Affected Version(s)

PostgreSQL 18 < 18.5

PostgreSQL 17 < 17.11

PostgreSQL 16 < 16.15

References

https://www.postgresql.org/support/security/CVE-2026-14680/

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 Amy Burnett (OpenAI Codex Security) for reporting this problem.
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