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-2026-13773

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...

EUVD-2026-40388

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 ships three ObjectInputStream subclasses WsObjectInputStream, ObjectStreamPool$ReusableInputStream, ObjectInputStreamResolver that install no JEP-290 class filter; when Coherence is on the classpath, multiple RCE gadget chains including...

CVE-2026-13759

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 ships three ObjectInputStream subclasses WsObjectInputStream, ObjectStreamPool$ReusableInputStream, ObjectInputStreamResolver that install no JEP-290 class filter; when Coherence is on the classpath, multiple RCE gadget chains including...

CVE-2026-13759 IBM WebSphere eXtreme Scale is affected by Insecure Deserilization

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 ships three ObjectInputStream subclasses WsObjectInputStream, ObjectStreamPool$ReusableInputStream, ObjectInputStreamResolver that install no JEP-290 class filter; when Coherence is on the classpath, multiple RCE gadget chains including...

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-2026-13772

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...

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 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...

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 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,...

Security Bulletin: IBM WebSphere eXtremes Scale is affected by uncontrolled resource consumption when XDF is enabled

Summary IBM WebSphere eXtremes Scale is affected by uncontrolled resource consumption when XDF is enabled CVE-2026-9002 Vulnerability Details CVEID:CVE-2026-9002 DESCRIPTION: IBM WebSphere eXtreme Scale could allow an adjacent attacker to cause a denial of service due to improper validation in th...

IBM WebSphere eXtreme Scale 8.6.1.0 < 8.6.1.6 (7277387)

The version of IBM WebSphere eXtreme Scale installed on the remote host is prior to 8.6.1.6. It is, therefore, affected by multiple vulnerabilities as referenced in the 7277387 advisory. - Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of...

Security Bulletin: Multiple Vulnerabilities in IBM® Runtime Environment Java™ Technology Edition affects WebSphere eXtreme Scale

Summary There are multiple vulnerabilities in IBM Runtime Environment Java Version 8 used by WebSphere eXtreme Scale. Vulnerability Details CVEID:CVE-2026-22016 DESCRIPTION: Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise...

IBM WebSphere eXtreme Scale 8.6.1.0 < 8.6.1.6 (7267689)

The version of IBM WebSphere eXtreme Scale installed on the remote host is prior to 8.6.1.6. It is, therefore, affected by multiple vulnerabilities as referenced in the 7267689 advisory. - In the Eclipse OMR port library component since release 0.2.0, an API function to return the textual names o...

Security Bulletin: Multiple Vulnerabilities in IBM® Runtime Environment Java™ Technology Edition affects WebSphere eXtreme Scale

Summary There are multiple vulnerabilities in IBM Runtime Environment Java Version 8 used by WebSphere eXtreme Scale. Vulnerability Details CVEID:CVE-2026-21945 DESCRIPTION: Java SE is vulnerable to a denial of service, caused by an easily exploitable vulnerability issue that allows an remote...