What is CVE-2026-9338?

CVE-2026-9338 is a medium-severity vulnerability in IBM Websphere Application Server, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2026-09-10.

How severe is CVE-2026-9338?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in IBM Websphere Application Server

CVE-2026-9338

IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to trigger excessive resource consumption, potentially leading to reduced availability of the affected service.

Vulnerability class: DoS (Denial of Service)

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Ibm Websphere Application Server — versions 8.5, 9.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-9338?: CVE-2026-9338 is a medium-severity vulnerability in IBM Websphere Application Server, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2026-09-10.
How severe is CVE-2026-9338?: Medium severity. CVSS v3 base score is 5.3 out of 10.