CVE-2026-13773
Medium
Description
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.
SeverityMedium
CVSS6.0
Exploit probability—
Product
Ibm Websphere Extreme Scale
PublishedJun 30, 2026
First seenJun 30, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ibm websphere_extreme_scale | 8.6.1.0 ≤ v ≤ 8.6.1.6 | — |
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