CVE-2026-14671
Description
A flaw was found in PostgreSQL. A type confusion vulnerability in the 'refint' module allows an object creator to execute arbitrary code as the operating system user running the database. This could lead to a complete compromise of the database server.
Statement
An Important-rated type confusion vulnerability in PostgreSQL's refint module allows an authenticated user with object creation privileges to execute arbitrary code. Successful exploitation results in a complete compromise of the database server, as the code executes under the context of the database's operating system user."
Mitigation
To mitigate this vulnerability, administrators should avoid installing the refint module and remove it if it is currently deployed by executing DROP EXTENSION refint; as a database superuser. Additionally, enforcing the principle of least privilege by revoking CREATE permissions on databases from untrusted users prevents them from creating the malicious objects necessary to exploit this flaw.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 8.8 | N/A | 8.8 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | High | N/A | High |
| Integrity Impact | High | N/A | High |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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