CVE-2026-9002
IBM WebSphere eXtremes Scale is affected by uncontrolled resource consumption when XDF is enabled
Description
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.
INFO
Published Date :
June 30, 2026, 8:17 p.m.
Last Modified :
Oct. 25, 2026, 9:10 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 9a959283-ebb5-44b6-b705-dcc2bbced522 | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update WebSphere Extreme Scale to a fixed version.
- Validate XDF decoder inputs.
- Implement sufficient bounds checking.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-9002.
| URL | Resource |
|---|---|
| https://www.ibm.com/support/pages/node/7278346 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-9002 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-9002
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-9002 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-9002 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 25, 2026
Action Type Old Value New Value Added Translation Title: WebSphere Extreme Scale de IBM, Description: IBM WebSphere Extreme Scale 8.6.1.0 hasta 8.6.1.6 podría permitir a un atacante adyacente causar una denegación de servicio debido a una validación incorrecta en el decodificador XDF. La aplicación procesa mensajes de Protocol Buffers profundamente anidados y prefijos de longitud controlados por el atacante sin una comprobación de límites suficiente, lo que podría permitir a un atacante en la misma red activar un StackOverflowError o OutOfMemoryError, resultando en un fallo de la JVM del servidor de aplicaciones WebSphere. -
Initial Analysis by [email protected]
Jul. 02, 2026
Action Type Old Value New Value Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:ibm:websphere_extreme_scale:*:*:*:*:*:*:*:* versions from (including) 8.6.1.0 up to (including) 8.6.1.6 Added Reference Type IBM Corporation: https://www.ibm.com/support/pages/node/7278346 Types: Vendor Advisory -
New CVE Received by [email protected]
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.0:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.6:*:*:*:*:*:*:*'], 'vendor': 'IBM', 'product': 'WebSphere Extreme Scale', 'versions': [{'status': 'affected', 'version': '8.6.1.0', 'versionType': 'semver', 'lessThanOrEqual': '8.6.1.6'}]}] Added Description 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. Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-400 Added Reference https://www.ibm.com/support/pages/node/7278346 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 30, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-9002', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-30T19:30:23.440960Z'}