CVE-2026-13773
IBM WebSphere eXtreme Scale is affected by server side request forgery when ORB is used as Transport Protocol
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.
INFO
Published Date :
June 30, 2026, 7:20 p.m.
Last Modified :
June 30, 2026, 7:20 p.m.
Remotely Exploit :
Yes !
Source :
ibm
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 9a959283-ebb5-44b6-b705-dcc2bbced522 |
Solution
- Update WebSphere eXtreme Scale to a fixed version.
- Apply necessary security patches and updates.
- Validate ORB configurations and input filtering.
- Monitor network traffic for suspicious IIOP connections.
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