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.string_to_object() on an attacker-controlled IOR string during Java deserialization, turning any unfiltered ObjectInputStream sink in WAS into outbound IIOP SSRF to an attacker-chosen host; when chained with the IBM ORB's getUserException class-instantiation flaw (WAS-26), this SSRF escalates to remote code execution on the calling JVM.

CVSS v3 6.0 MEDIUM

6.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.7

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://www.ibm.com/support/pages/node/7278594	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 : 2026-07-02 18:26

NVD link : CVE-2026-13773

Mitre link : CVE-2026-13773

CVE.ORG link : CVE-2026-13773

JSON object : View

Products Affected

ibm

websphere_extreme_scale

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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