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…

PriorityP352critical9.1CVSS 3.1

AVNACLPRNUINSUCHIHAN

EPSS

0.34%

25.8th percentile

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.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
ibm	websphere_application_server	>= 17.0.0.3 < 26.0.0.7	26.0.0.7
ibm	websphere_application_server	8.5.0 – 7.0.3 Interim Fix 017	—
ibm	websphere_application_server	>= 8.5.0.0 < 8.5.5.30	8.5.5.30
ibm	websphere_application_server	9.0.0 – 7.0.2 Interim Fix 035	—
ibm	websphere_application_server	>= 9.0.0.0 < 9.0.5.29	9.0.5.29
ibm	websphere_application_server_liberty	17.0.0.3 – 26.0.0.6	—

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