Is CVE-2026-18872 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-18872?

CVE-2026-18872 has a CVSS v3 severity of CRITICAL (9.3).

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CVE-2026-18872

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.