CVE-2026-103499: IBM WebSphere Application Server

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 and IBM WebSphere Application Server 8.5, and 9.0 Liberty could allow a remote unauthenticated attacker to cause a denial of service due to uncontrolled resource consumption.

Affected products

• IBM WebSphere Application Server: version 8.5 only; version 9.0 only
• IBM WebSphere Application Server - Liberty: from 17.0.0.3, up to and including 26.0.0.10

Published 2026-10-13. Last modified 2026-10-13.