---
id: CVE-2026-18505
title: >-
  IBM Financial Transaction Manager (FTM) for RedHat OpenShift is vulnerable to
  open redirect in the PMP `HostHeaderFilter` (`HostHeaderFilter.java:151`)
summary: >-
  IBM Financial Transaction Manager (FTM) for RedHat OpenShift is vulnerable to
  open redirect in the PMP `HostHeaderFilter` (`HostHeaderFilter.java:151`). An
  unauthenticated attacker can craft a request with a manipulated `Host` header
  to …
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'
cwe:
  - CWE-601
vendor: IBM
product: "Financial Transaction Manager (FTM)\_for RedHat OpenShift"
affected:
  - >-
    financial_transaction_manager_ftm_for_redhat_openshift >= 4.0.6.0 <=
    4.0.10.0
published: '2026-09-23'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T18:17:08.477'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18505'
references:
  - url: 'https://www.ibm.com/support/pages/node/7288641'
    label: psirt@us.ibm.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-23T17:45:51.817996Z'
ingestedAt: '2026-09-23T16:27:22.651Z'
epss: 0.00146
epssPercentile: 0.0316
---

## Overview

IBM Financial Transaction Manager (FTM) for RedHat OpenShift is vulnerable to open redirect in the PMP `HostHeaderFilter` (`HostHeaderFilter.java:151`). An unauthenticated attacker can craft a request with a manipulated `Host` header to redirect authenticated operators to attacker-controlled sites, enabling credential phishing.

## Remediation

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