CVE-2026-8646

IBM WebSphere Application Server 9.0 and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to HTTP request smuggling. A remote attacker could smuggle a specially crafted request to the application server thereby allowing the attacker to bypass security controls, spoof identity, escalate privilege, and expose sensitive information.

Score

CVSS 3.1 9.1 Critical

Status

Analyzed - psirt@us.ibm.com

Published

2026-06-22

Last modified

2026-06-24

Weaknesses

CWE-444

Affected products

• Websphere Application Server (Ibm)
• Websphere Application Server Liberty (Ibm)

References

• https://www.ibm.com/support/pages/node/7276579