HTTP Request Smuggling Vulnerability in IBM WebSphere Application Server
CVE-2026-15328

7.4HIGH

Key Information:

Vendor

IBM
Status
Websphere Application Server
Websphere Application Server - Liberty
Vendor
CVE Published:
28 July 2026

What is CVE-2026-15328?

IBM WebSphere Application Server versions 9.0, 8.5, and Liberty versions 17.0.0.3 through 26.0.0.7 are susceptible to an HTTP request smuggling vulnerability. This weakness can allow an attacker to manipulate the way a server interprets and processes requests, potentially leading to unauthorized data access and severe impacts on application integrity. It is crucial for organizations using these affected versions to apply the necessary patches provided by IBM to secure their systems against this threat.

Affected Version(s)

WebSphere Application Server 9.0

WebSphere Application Server 8.5

WebSphere Application Server - Liberty 17.0.0.3 <= 26.0.0.7

References

https://www.ibm.com/support/pages/node/7281625
vendor-advisorypatch

CVSS V3.1

Score:
7.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.