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CVE-2026-8646

IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities

Published: Jun 22, 2026Updated: Jun 22, 2026 Sources: CVE List NVDCWE-444
NVD MITRE
7.4CVSSHIGH
EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-444

Affected Products

WebSphere Application ServerIBM
On-premWeb App
Enterprise Software
WebSphere Application Server - LibertyIBM
On-prem
Enterprise Software / itsm-monitoring
ibmcommercialUSEnterprise Softwareaka international business machines

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

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

Timeline

Published
Jun 22, 2026
Last Updated
Jun 22, 2026

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