CVE-2026-9176: IBM WebSphere Application Server

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a security bypass due to improper authentication controls. A local attacker could exploit this vulnerability to escalate privileges and gain unauthorized access to protected resources.

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 2026-09-10. Last modified 2026-09-15.