Denial of Service Vulnerability in IBM WebSphere Application Server
CVE-2026-9320

5.9MEDIUM

Key Information:

Vendor

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

What is CVE-2026-9320?

IBM WebSphere Application Server, including versions 9.0, 8.5, and Liberty versions 17.0.0.3 to 26.0.0.6, suffers from a denial of service vulnerability. This vulnerability is triggered by sending a specially crafted request that leads the server to exhaust its memory resources. A remote attacker can exploit this flaw to disrupt the server's operations, making it crucial to apply the necessary patches to maintain system stability and security.

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:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.