What’s Vulnerable › Vulnerabilities
CVE-2026-13773: IBM WebSphere eXtreme Scale is affected by server side request forgery when ORB is used as Transport Protocol
- Severity: critical (CVSS 10.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 6.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-30 · updated 2026-10-25
- Weakness: CWE-918
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.
Affected products
- IBM WebSphere eXtreme Scale: from 8.6.1.0 through 8.6.1.6
References
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