Insecure Deserialization Vulnerability in IBM WebSphere Application Server
CVE-2026-105442

7.5HIGH

Key Information:

Vendor

IBM
Status
Websphere Application Server
Websphere Application Server - Liberty
Vendor
CVE Published:
13 October 2026

What is CVE-2026-105442?

A vulnerability in IBM WebSphere Application Server allows remote attackers to exploit insecure deserialization in the messaging service, potentially leading to a denial of service. This could impact server availability and disrupt services for users. It is crucial to apply the recommended patches to mitigate this vulnerability and maintain system integrity.

Affected Version(s)

WebSphere Application Server 8.5

WebSphere Application Server 9.0

WebSphere Application Server - Liberty 17.0.0.3 <= 26.0.0.10

References

https://www.ibm.com/support/pages/node/7292221
vendor-advisorypatch

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.