Type Confusion Vulnerability in PostgreSQL Database System
CVE-2026-116335

8.8HIGH

Key Information:

Vendor

PostgreSQL
Status
Postgresql
Vendor
CVE Published:
12 November 2026

What is CVE-2026-116335?

A type confusion vulnerability exists in the PostgreSQL database system, allowing attackers to create improper operator links between different result types. This flaw can lead to arbitrary code execution as the database's operating system user. This can be triggered through the creation of inconsistent reciprocal links, posing significant security risks for affected versions prior to PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25.

Affected Version(s)

PostgreSQL 18 < 18.7

PostgreSQL 17 < 17.12

PostgreSQL 16 < 16.16

References

https://www.postgresql.org/support/security/CVE-2026-116335/

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 Stephan Lipp for reporting this problem.
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