CVE-2020-4303: IBM WebSphere Application Server

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

IBM WebSphere Application Server - Liberty 17.0.0.3 through 20.0.0.3 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: 176668.

Affected products

• IBM WebSphere Application Server: from 17.0.0.3, up to and including 20.0.0.3

Published 2020-04-02. Last modified 2026-06-17.