CVE-2026-8646

CRITICAL EPSS 25.6%
Published Jun 22, 20261w ago · Modified Jun 24, 20265d ago
9.1 CVSS 3.1
Critical
Find Similar
Published Jun 22, 2026 1w ago
Last Modified Jun 24, 2026 5d ago

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.

CVSS Details

Base Score
9.1
Exploitability
3.9
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
25.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-444

Affected Products 9

VendorProductVersionRange
ibmwebsphere_application_server*≥8.5.0.0  –  <8.5.5.30
ibmwebsphere_application_server*≥9.0.0.0  –  <9.0.5.29
ibmwebsphere_application_server*≥17.0.0.3  –  <26.0.0.7
applemacos*any
ibmaix*any
ibmi*any
ibmz\/os*any
linuxlinux_kernel*any
microsoftwindows*any

References 1

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.