# CVE-2026-17635: IBM Financial Transaction Manager improper HTTP security constraints

Source: https://junglewise.ai/threats/cve-2026-17635-ibm-financial-transaction-manager-ftm-for-redhat-openshift-could  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-22. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-17635 · Severity: critical · CVSS 9.1 · Published 2026-09-22

IBM Financial Transaction Manager (FTM) is a financial transaction processing platform deployed on RedHat OpenShift. Improper configuration of HTTP method-based security constraints allows remote attackers to bypass access controls and perform unauthorized financial or administrative actions without proper authentication. This could lead to fraudulent transactions, data theft, or system compromise.

Technologies: [IBM Financial Transaction Manager](https://junglewise.ai/threats/technologies/financial-transaction-manager). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-17635 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-17635 being exploited in the wild.

**How severe is CVE-2026-17635?** Critical severity, with a CVSS score of 9.1, published 22 September 2026.

**Which products and versions are affected?** IBM Financial Transaction Manager.

**Is there a fix for CVE-2026-17635?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-17635 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-17635?** Check whether you run IBM Financial Transaction Manager. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability stems from inadequate enforcement of HTTP method-based security constraints, allowing unauthenticated or low-privileged remote attackers to invoke protected operations via HTTP requests. The flaw permits direct access to sensitive endpoints that should require authentication or higher privilege levels. A patch is available from IBM.

## Affected products

- IBM Financial Transaction Manager

## Timeline

- 2026-09-22: disclosed

## References

- [https://www.ibm.com/support/pages/node/7288641](https://www.ibm.com/support/pages/node/7288641)

## Related threats

- [IBM Financial Transaction Manager XML external entity injection](https://junglewise.ai/threats/cve-2026-93030-ftm-4-x-all-could-allow-a-remote-authenticated-attacker-to-obtain)
- [IBM Financial Transaction Manager missing authentication in Business Rules Manager](https://junglewise.ai/threats/cve-2026-19267-ibm-financial-transaction-manager-ftm-for-redhat-openshift-is)
- [IBM Financial Transaction Manager boolean-based SQL injection](https://junglewise.ai/threats/cve-2026-19179-ibm-financial-transaction-manager-ftm-for-redhat-openshift-could)
- [IBM Financial Transaction Manager privilege escalation in container](https://junglewise.ai/threats/cve-2026-19087-ibm-financial-transaction-manager-ftm-for-redhat-openshift-could)
- [IBM Financial Transaction Manager RAG poisoning via unauthenticated runbook](https://junglewise.ai/threats/cve-2026-18875-ibm-financial-transaction-manager-ftm-for-redhat-openshift-is)