CVE-2026-16184: IBM WebSphere Application Server

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

IBM WebSphere Application Server 9.0, and 8.5 could allow a remote attacker to bypass authentication by sending a crafted unauthenticated request.

Affected products

• IBM WebSphere Application Server: from 8.5.0.0, before 8.5.5.31 (fixed in 8.5.5.31); from 9.0.0.0, before 9.0.5.29 (fixed in 9.0.5.29)

Published 2026-07-28. Last modified 2026-08-03.