Denial of Service Vulnerability in IBM WebSphere Application Server
CVE-2026-9071

7.5HIGH

Key Information:

Vendor

IBM
Status
Websphere Application Server
Websphere Application Server - Liberty
Vendor
CVE Published:
22 June 2026

What is CVE-2026-9071?

IBM WebSphere Application Server, specifically versions 9.0 and 8.5, along with WebSphere Application Server - Liberty from version 17.0.0.3 through 26.0.0.6, are susceptible to a denial of service attack. This vulnerability can be triggered when a remote attacker sends a specially-crafted request, resulting in the server consuming excessive memory resources. Organizations utilizing affected versions are advised to apply patches promptly to mitigate the risk of service disruption.

Affected Version(s)

WebSphere Application Server 9.0.0 <= 7.0.2 Interim Fix 035

WebSphere Application Server 8.5.0 <= 7.0.3 Interim Fix 017

WebSphere Application Server - Liberty 17.0.0.3 <= 26.0.0.6

References

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

.