---
id: CVE-2026-4405
title: IBM Concert Software Use of Web Browser Cache Containing Sensitive Information
summary: >-
  IBM Concert 1.0 through 3.0.0 allows web page cache to be stored locally which
  can be read by another user on the system.
severity: medium
cvss: 4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-525
vendor: IBM
product: Concert
affected:
  - Concert >= 1.0.0 <= 3.0.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-19T18:23:08.762889Z'
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T18:23:21.592Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-4405'
references:
  - url: 'https://www.ibm.com/support/pages/node/7292374'
tags:
  - cve.org
ingestedAt: '2026-10-19T17:33:42.448Z'
---

## Overview

IBM Concert 1.0 through 3.0.0 allows web page cache to be stored locally which can be read by another user on the system.

## 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.