CVE-2026-9338

IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities

MEDIUM
5.3
CVSS Score
Published: September 10, 2026 at 06:44 PM UTC
Updated: September 16, 2026 at 06:24 PM UTC
1 product affected across 1 vendorWebSphere Application Server

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

8.5.0.0 ≤ v < 8.5.5.319.0.0.0 ≤ v < 9.0.5.298.58.5.09.09.0.0
Affected range stops below 8.5.5.31, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.5.29, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://www.ibm.com/support/pages/node/7286610

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMibm
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-400

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