Authentication Bypass Vulnerability in IBM WebSphere Application Server
CVE-2026-93909

9.1CRITICAL

Key Information:

Vendor

IBM
Status
Websphere Application Server - Liberty
Vendor
CVE Published:
13 October 2026

What is CVE-2026-93909?

IBM WebSphere Application Server - Liberty versions 17.0.0.3 through 26.0.0.10 are exposed to an authentication bypass vulnerability when the SAML Web 2.0 feature is enabled. This flaw potentially allows attackers to bypass security measures, granting unauthorized access to sensitive resources. It is crucial for users to apply the recommended patches to mitigate this risk and protect their systems.

Affected Version(s)

WebSphere Application Server - Liberty 17.0.0.3 <= 26.0.0.10

References

https://www.ibm.com/support/pages/node/7292236
vendor-advisorypatch

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.