Description
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.
Published: 2026-09-10
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Apply Patch
AI Analysis

Impact

The vulnerability allows a causes the IBM WebSphere Application Server to consume excessive resources, leading to a denial of service. This flaw is classified as CWE-400 (Uncontrolled Resource Consumption). The primary impact is reduced availability for the affected service.

Affected Systems

IBM WebSphere Application Server prior to versions 8.5.5.31 and 9.0.5.29 are vulnerable until the relevant fix pack is applied.

Risk and Exploitability

The CVSS score of 5.3 indicates moderate severity, and the lack of EPSS data coupled with the vulnerability not being listed in the KEV catalog suggests a lower current exploitation probability. Nevertheless, as the issue is a remote denial of service, an attacker could trigger widespread resource exhaustion if the server is exposed to external traffic. The fix is recommended to mitigate the risk.

Generated by OpenCVE AI on September 10, 2026 at 23:17 UTC.

Remediation

Vendor Solution

IBM strongly recommends addressing the vulnerabilities now by applying the fix pack(s) listed below. For IBM WebSphere Application Server traditional: For V9.0.0.0 through 9.0.5.28: · Apply Fix Pack 9.0.5.29 SB0030823 (availability September 2026) or later fix pack.  For V8.5.0.0 through 8.5.5.30: · Apply Fix Pack 8.5.5.31 https://www.ibm.com/support/pages/node/7285869 (availability September 2026) or later fix pack.

OpenCVE Recommended Actions

  • Apply IBM WebSphere Application Server Fix Pack 9.0.5.29 SB0030823 or later for version 9, and 8.5.5.31 or later for version 8.5.
  • Restart each affected WebSphere application server to apply the patch changes.
  • Configure adequate resource limits to prevent uncontrolled resource consumption and monitor utilization after the restart.

Generated by OpenCVE AI on September 10, 2026 at 23:17 UTC.

Tracking

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Advisories

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History

Wed, 16 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:-:*:*:*

Thu, 10 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 10 Sep 2026 18:45:00 +0000

Type Values Removed Values Added
Description 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.
Title IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
First Time appeared Ibm
Ibm websphere Application Server
Weaknesses CWE-400
CPEs cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm websphere Application Server
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Subscriptions

Ibm Websphere Application Server
cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-09-10T19:00:58.116Z

Reserved: 2026-05-22T23:51:33.683Z

Link: CVE-2026-9338

cve-icon Vulnrichment

Updated: 2026-09-10T19:00:54.997Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-10T19:17:42.807

Modified: 2026-09-16T18:14:23.920

Link: CVE-2026-9338

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-11T18:45:13Z

Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption