IBM WebSphere eXtremes Scale is affected by uncontrolled resource consumption when XDF is enabled
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-9002
- 2026-10-03 Alias added: GHSA-qh26-gm6x-4qpg
References
More IBM Websphere Extreme Scale vulnerabilities
- TI-2026-11613 IBM WebSphere eXtreme Scale is affected by server side request forgery when ORB is used as Transport Protocol CVSS 3.1CRITICAL 10.0
- TI-2026-11612 IBM WebSphere eXtreme Scale's OQL is affected by remote code execution CVSS 3.1CRITICAL 9.9
- TI-2026-11600 IBM WebSphere eXtreme Scale is affected by Insecure Deserilization CVSS 3.1HIGH 8.8
- TI-2013-04605 The monitoring console in IBM WebSphere eXtreme Scale 7.1.0, 7.1.1, 8.5.0, and 8.6.0 does… CVSS 2.0HIGH 7.5
- TI-2016-00354 CRLF injection vulnerability in IBM WebSphere eXtreme Scale 7.1.0 before 7.1.0.3, 7.1.1… CVSS 3.0MEDIUM 6.1
- TI-2019-03073 Clickjacking in IBM WebSphere eXtreme Scale CVSS 3.1MEDIUM 6.1
Sources
- CVE-2026-9002 · CVE Program
- CVE-2026-9002 · NVD
- FIRST EPSS
- GHSA-qh26-gm6x-4qpg · GitHub Advisory Database · CC BY 4.0
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