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CVE-2026-18872

IBM Financial Transaction Manager cross-site scripting (XSS)

9.3 CRITICALEPSS 0.19%
  1. Published23 Sept 2026

Description

IBM Financial Transaction Manager (FTM) for RedHat OpenShift is vulnerable to stored cross-site scripting (CWE-79) in the FTM UI NetworkAcknowledgement React component (NetworkAcknowledgement.jsx:42). A malicious actor can inject script into stored network acknowledgement data that executes in authenticated operator browsers, enabling session hijacking and unauthorized operator-level payment actions.

CVSS 3.1 breakdown

Attack vectorAdjacent
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Affected products

IBM Financial Transaction Manager≥ 4.0.7.0 < 4.0.11.0 · 4.0.6.0

Remediation

Fixed in
IBM Financial Transaction Manager≥ 4.0.11.0

References

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Frequently asked

Is CVE-2026-18872 being actively exploited?

CVE-2026-18872 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.19%.

How severe is CVE-2026-18872?

CVE-2026-18872 has a CVSS 3.1 base score of 9.3, rated critical. EPSS estimates a 0.19% probability of exploitation.

Which products are affected by CVE-2026-18872?

Affected products include IBM Financial Transaction Manager.

How do I fix CVE-2026-18872?

Upgrade affected software to a fixed version, for example IBM Financial Transaction Manager 4.0.11.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-18872 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.