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 remo...

CVE-2026-13772 IBM WebSphere eXtreme Scale's OQL is affected by remote code execution

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 remo...

EUVD-2026-40387

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 remo...

CVE-2026-13773

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes in WebSphere eXtreme Scale's ogclient.jar call ORB.stringtoobject on an attacker-controlled IOR string during Java deserialization, turning any unfiltered ObjectInputStream sink in WAS into outbound...

CVE-2026-13773 IBM WebSphere eXtreme Scale is affected by server side request forgery when ORB is used as Transport Protocol

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes in WebSphere eXtreme Scale's ogclient.jar call ORB.stringtoobject on an attacker-controlled IOR string during Java deserialization, turning any unfiltered ObjectInputStream sink in WAS into outbound...

CVE-2026-13773

CVE-2026-13773 affects IBM WebSphere eXtreme Scale 8.6.1.0–8.6.1.6. Approximately 50 generated CORBA stub classes in ogclient.jar deserialize an attacker-controlled IOR via ObjectInputStream, using ORB.string_to_object() to perform outbound IIOP SSRF to a chosen host. When combined with IBM ORB g...

EUVD-2026-40386

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes in WebSphere eXtreme Scale's ogclient.jar call ORB.stringtoobject on an attacker-controlled IOR string during Java deserialization, turning any unfiltered ObjectInputStream sink in WAS into outbound...

CVE-2026-13773 IBM WebSphere eXtreme Scale is affected by server side request forgery when ORB is used as Transport Protocol

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes in WebSphere eXtreme Scale's ogclient.jar call ORB.stringtoobject on an attacker-controlled IOR string during Java deserialization, turning any unfiltered ObjectInputStream sink in WAS into outbound...

CVE-2026-9002

IBM WebSphere eXtremes Scale is affected in versions 8.6.1.0–8.6.1.6 by an XDF decoder validation issue. The decoder may mishandle deeply nested Protocol Buffers messages and attacker-controlled length prefixes without proper bounds checking, enabling an adjacent attacker to trigger StackOverflow...

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

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...

CVE-2026-9002

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...

EUVD-2026-40379

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...

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

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...

Security Bulletin: IBM WebSphere eXtreme Scale's OQL is affected by remote code execution

Summary IBM WebSphere eXtremes Scale's OQL is affected by remote code execution CVE-2026-13772 Vulnerability Details CVEID:CVE-2026-13772 DESCRIPTION: WebSphere eXtreme Scale's Object Query Language engine resolves attacker-supplied class names via Class.forName and invokes their constructors wit...

Security Bulletin: IBM WebSphere eXtreme Scale is affected by server side request forgery when ORB is used as Transport Protocol

Summary IBM WebSphere eXtremes Scale is affected by server side request forgery when ORB is used as Transport Protocol CVE-2026-13773 Vulnerability Details CVEID:CVE-2026-13773 DESCRIPTION: Approximately 50 generated CORBA stub classes in WebSphere eXtreme Scale's ogclient.jar call...

Security Bulletin: IBM WebSphere eXtreme Scale is affected by Insecure Deserilization

Summary IBM WebSphere eXtreme Scale is affected by Insecure Deserilization of untrusted data CVE-2026-13759 Vulnerability Details CVEID:CVE-2026-13759 DESCRIPTION: WebSphere eXtreme Scale ships three ObjectInputStream subclasses WsObjectInputStream, ObjectStreamPool$ReusableInputStream,...

CVE-2026-9002: Uncontrolled Resource Consumption

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...

CVE-2026-13772: Use of Externally-Controlled Input to Select Classes or Code

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 remo...

PT-2026-53944

Name of the Vulnerable Software and Affected Versions IBM WebSphere Extreme Scale versions 8.6.1.0 through 8.6.1.6 Description Approximately 50 CORBA stub classes within the ogclient.jar file call the ORB.string to object function using an attacker-controlled IOR string during Java deserializatio...

CVE-2026-13773: Server-Side Request Forgery (SSRF)

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes in WebSphere eXtreme Scale's ogclient.jar call ORB.stringtoobject on an attacker-controlled IOR string during Java deserialization, turning any unfiltered ObjectInputStream sink in WAS into outbound...