CVE-2026-11539: IBM WebSphere Application Server

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

IBM WebSphere Application Server 9.0 and 8.5 is affected by an authentication bypass vulnerability in the SOAP/JMX connector.

Affected products

• IBM WebSphere Application Server: version 9.0 only; version 8.5 only

Published 2026-09-18. Last modified 2026-09-22.