---
id: CVE-2026-15661
title: IBM Concert Software Improper Output Neutralization for Logs
summary: >-
  IBM Concert 1.0 through 3.0.0 could allow an unauthorized user to inject data
  into log messages due to improper neutralization of special elements when
  written to log files.
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-117
vendor: IBM
product: Concert
affected:
  - Concert >= 1.0.0 <= 3.0.0
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T17:11:39.981Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-15661'
references:
  - url: 'https://www.ibm.com/support/pages/node/7292374'
tags:
  - cve.org
ingestedAt: '2026-10-19T17:33:42.451Z'
---

## Overview

IBM Concert 1.0 through 3.0.0 could allow an unauthorized user to inject data into log messages due to improper neutralization of special elements when written to log files.

## Affected

- `Concert >= 1.0.0 <= 3.0.0`

## Remediation

IBM strongly recommends addressing these vulnerabilities now by upgrading to IBM Concert Software 3.0.1.1
Download IBM Concert Software 3.0.1.1 from Container software library section of IBM Entitled Registry (ICR) and follow installation instructions depending on the type of deployment.