CVE-2026-9002 MEDIUM

CVE-2026-9002: IBM WebSphere eXtremes Scale is affected by uncontrolled resource consumption when XDF is enabled

Vendor Ibm
Product WebSphere Extreme Scale
Weakness CWE-400
Published June 30, 2026
Last update June 30, 2026

CVSS base score

6.5/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 could allow an adjacent attacker to cause a denial of service due to improper validation in the XDF decoder. The application processes deeply nested Protocol Buffers messages and attacker-controlled length prefixes without sufficient bounds checking, which may allow an attacker on the same network to trigger a StackOverflowError or OutOfMemoryError, resulting in a crash of the WebSphere Application Server JVM.

Key dates

02Disclosure timeline

June 30, 2026 CVE published