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TI-2026-11613 Aliases CVE-2026-13773GHSA-hgv4-prq7-c9mx

IBM WebSphere eXtreme Scale is affected by server side request forgery when ORB is used as Transport Protocol

Priority MEDIUM 52CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.06097 93rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
IBMWebSphere Extreme Scale8.6.1.0 – 8.6.1.6—No fix listedCNA
  • WebSphere Extreme Scale VendorIBM Affected 8.6.1.0 – 8.6.1.6 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:ibm:websphere_extreme_scale:*:*:*:*:*:*:*:*8.6.1.0 – 8.6.1.6VulnerableIBM
  • cpe:2.3:a:ibm:websphere_extreme_scale:*:*:*:*:*:*:*:* Versions 8.6.1.0 – 8.6.1.6 Vulnerable ·IBM

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-13773
  2. 2026-10-03 Alias added: GHSA-hgv4-prq7-c9mx

References

Patch 1

  • TI-2026-11612 IBM WebSphere eXtreme Scale's OQL is affected by remote code execution CVSS 3.1CRITICAL 9.9
  • TI-2026-11600 IBM WebSphere eXtreme Scale is affected by Insecure Deserilization CVSS 3.1HIGH 8.8
  • TI-2013-04605 The monitoring console in IBM WebSphere eXtreme Scale 7.1.0, 7.1.1, 8.5.0, and 8.6.0 does… CVSS 2.0HIGH 7.5
  • TI-2016-00354 CRLF injection vulnerability in IBM WebSphere eXtreme Scale 7.1.0 before 7.1.0.3, 7.1.1… CVSS 3.0MEDIUM 6.1
  • TI-2019-03073 Clickjacking in IBM WebSphere eXtreme Scale CVSS 3.1MEDIUM 6.1
  • TI-2026-07915 IBM WebSphere eXtremes Scale is affected by uncontrolled resource consumption when XDF is enabled CVSS 3.1MEDIUM 6.5
See all 22 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences