---
id: CVE-2026-109448
title: >-
  Integer wraparound in psqlODBC SQLBindParameter allows an application, or an
  attacker who controls how many parameters the application binds on one
  statement, to corrupt heap memory
summary: >-
  Integer wraparound in psqlODBC SQLBindParameter allows an application, or an
  attacker who controls how many parameters the application binds on one
  statement, to corrupt heap memory. psqlODBC stores the binding count in a
  signed 16-bit f…
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-124
  - CWE-190
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T18:17:22.633'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109448'
references:
  - url: >-
      https://github.com/postgresql-interfaces/psqlodbc/security/advisories/GHSA-cmfx-rm3r-p2jr
    label: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
tags:
  - nvd
ingestedAt: '2026-10-12T19:01:57.227Z'
---

## Overview

Integer wraparound in psqlODBC SQLBindParameter allows an application, or an attacker who controls how many parameters the application binds on one statement, to corrupt heap memory. psqlODBC stores the binding count in a signed 16-bit field. Binding parameter number 32768 wraps that count to -32768. Binding parameter 32769 then writes about 2.5 MB of zeros starting 1.25 MB before the binding array, which crashes the application or leaves it running on a corrupted heap. Applications that build parameter lists from untrusted input, such as an IN (?, ?, ...) list, are exposed. Versions before psqlODBC 18.00.0005 are affected.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.