XXE in IBM Financial Transaction Manager

CVE-2026-17646

IBM Financial Transaction Manager (FTM) for RedHat OpenShift could allow a remote authenticated attacker to obtain sensitive information due to improper restriction of XML external entity references.

Vulnerability class: XXE (XML External Entity)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (21.9th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-17646: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-17646?
CVE-2026-17646 is a high-severity vulnerability in IBM Financial Transaction Manager, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.5/10. Published 2026-09-22.
How severe is CVE-2026-17646?
High severity. CVSS v3 base score is 8.5 out of 10.