CVE-2026-18505 is a vulnerability in IBM Financial Transaction Manager Ftmfor Redhat Openshift
Published on September 23, 2026
IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
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.
Vulnerability Analysis
CVE-2026-18505 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is an Open Redirect Vulnerability?
A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. An http parameter may contain a URL value and could cause the web application to redirect the request to the specified URL. By modifying the URL value to a malicious site, an attacker may successfully launch a phishing scam and steal user credentials. Because the server name in the modified link is identical to the original site, phishing attempts have a more trustworthy appearance.
CVE-2026-18505 has been classified to as an Open Redirect vulnerability or weakness.
Products Associated with CVE-2026-18505
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Affected Versions
IBM Financial Transaction Manager (FTM) for RedHat OpenShift:- Version 4.0.6.0, <= 4.0.10.0 is affected.