CVE-2026-19267: IBM Financial Transaction Manager missing authentication in Business Rules Manager

CVE-2026-19267 · Severity: medium · CVSS 6.2 · Published 2026-09-23

IBM Financial Transaction Manager (FTM) is middleware that manages financial transaction processing and business rules. An unauthenticated local attacker can invoke commands via the Business Rules Manager REST API to exhaust system resources and disrupt transaction processing and rule management functions. This requires local access to the system but bypasses all security controls.

Technologies: IBM Financial Transaction Manager. Vendors: IBM.

Quick answers

Is CVE-2026-19267 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-19267 being exploited in the wild.
How severe is CVE-2026-19267?
Medium severity, with a CVSS score of 6.2, published 23 September 2026.
Which products and versions are affected?
IBM Financial Transaction Manager 4.x.
Is there a fix for CVE-2026-19267?
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-2026-19267 attacked?
It is attacked with local access, in a web application.
Am I affected by CVE-2026-19267?
Check whether you run IBM Financial Transaction Manager at an affected version. 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 Business Rules Manager REST endpoint in CommandsResource.java:31 lacks authentication checks on critical command operations (CWE-306). A local attacker can directly invoke resource-intensive commands without credentials, causing denial of service by exhausting CPU, memory, or processing queues. The vulnerability requires local network or system access but no user interaction or prior authentication.

Affected products

  • IBM Financial Transaction Manager 4.x

Timeline

  • 2026-09-23: disclosed

References

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