CVE-2026-18505 IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities

Medium 5.4 Published 23 Sep 2026 Updated 23 Sep 2026

An unauthenticated attacker can exploit an open redirect in IBM FTM to redirect operators to malicious sites, facilitating credential phishing and potential account takeover.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-18505?

CVE-2026-18505 is a medium-severity vulnerability in Ibm Financial Transaction Manager, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-601

Which versions are affected by CVE-2026-18505?

It affects 1 product.

Products include Ibm Financial Transaction Manager.

How do I fix CVE-2026-18505?

No fix has been published for CVE-2026-18505 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-18505 being exploited?

There is no known exploitation of CVE-2026-18505 in the wild and no public exploit code.

All Ibm Financial Transaction Manager vulnerabilities

Sources

Also known as GHSA-fj39-4fcg-5f6v.