CVE-2026-15057: IBM WebSphere Application Server

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to a denial of service due to uncontrolled heap allocation.

Affected products

• IBM WebSphere Application Server: from 17.0.0.3, before 26.0.0.8 (fixed in 26.0.0.8)

Published 2026-07-28. Last modified 2026-08-05.