CVE-2026-13772

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 's Object Query Language engine resolves attacker-supplied class names via Class.forName() and invokes their constructors with no allow-list at three distinct sinks (SELECT NEW, enum literals, and reflection-based comparators); an authenticated remote attacker who can influence an application-built OQL query string can execute arbitrary constructors on the WAS JVM, and a SELECT DISTINCT variant using planted grid values fires the same gadget post-readObject in a manner that survives JEP-290 serialization filters across grid node boundaries

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.ibm.com/support/pages/node/7278593	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:ibm:websphere_extreme_scale:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-30 20:17

Updated : 2026-07-03 04:17

NVD link : CVE-2026-13772

Mitre link : CVE-2026-13772

CVE.ORG link : CVE-2026-13772

JSON object : View

Products Affected

ibm

websphere_extreme_scale

CWE

CWE-470

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

NVD-CWE-noinfo

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