CVE-2021-20561: IBM Sterling b2b Integrator

Medium severity, CVSS 6.1. EPSS: 0.6% chance of exploitation in the next 30 days.

IBM Sterling File Gateway 2.2.0.0 through 6.1.1.0 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 199230.

Affected products

• IBM Sterling b2b Integrator: from 2.2.0.0, up to and including 5.2.6.5_4; from 6.0.0.0, up to and including 6.0.0.6; from 6.0.1.0, up to and including 6.0.3.4; from 6.1.0.0, up to and including 6.1.0.2

Published 2021-10-07. Last modified 2026-06-17.