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CVE-2026-8646

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
22/06/2026
Last modified:
24/06/2026

Description

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 7.40 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x
7.40
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:* 8.5.0.0 (including) 8.5.5.30 (excluding)
cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:* 9.0.0.0 (including) 9.0.5.29 (excluding)
cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:liberty:*:*:* 17.0.0.3 (including) 26.0.0.7 (excluding)
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:*
cpe:2.3:o:ibm:i:-:*:*:*:*:*:*:*
cpe:2.3:o:ibm:z\/os:-:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools