# CVE-2026-18161: IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities

> Remote authenticated attackers can falsify transaction audit logs in IBM Financial Transaction Manager due to improper HTTP header validation.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Sep 2026
- **Updated:** 23 Sep 2026
- **Also known as:** GHSA-f7vq-hm4q-h5hr

## What is CVE-2026-18161?

CVE-2026-18161 is a medium-severity vulnerability in Ibm Financial Transaction Manager, published on 22 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

IBM Financial Transaction Manager (FTM) for RedHat OpenShift could allow a remote authenticated attacker to falsify transaction audit logs due to improper validation of a client-supplied HTTP header.

Weakness: CWE-778 (Insufficient Logging)

## Which versions are affected by CVE-2026-18161?

It affects 1 product.


Products: Ibm Financial Transaction Manager.

## How do I fix CVE-2026-18161?

No fix has been published for CVE-2026-18161 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-18161 being exploited?

There is no known exploitation of CVE-2026-18161 in the wild and no public exploit code.

## Other vulnerabilities in Ibm Financial Transaction Manager

- [CVE-2026-18169](https://insights.sbomify.com/CVE-2026-18169/): IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities (critical 9.9)
- [CVE-2026-18162](https://insights.sbomify.com/CVE-2026-18162/): IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities (critical 9.8)
- [CVE-2026-18163](https://insights.sbomify.com/CVE-2026-18163/): IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities (critical 9.8)
- [CVE-2026-18872](https://insights.sbomify.com/CVE-2026-18872/): IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities (critical 9.3)
- [CVE-2026-17635](https://insights.sbomify.com/CVE-2026-17635/): IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-18161 and fix it if it is affected.

What it is: CVE-2026-18161 is a medium-severity vulnerability in Ibm Financial Transaction Manager, published on 22 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-18161 in the wild and no public exploit code.

Affected product: Ibm Financial Transaction Manager. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-18161/ (Markdown: https://insights.sbomify.com/CVE-2026-18161/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-18161
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-18161
- OSV: https://osv.dev/vulnerability/CVE-2026-18161

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-18161/
Summaries are generated and may contain mistakes; the official description above is the record.