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CVE-2026-13773

MEDIUM
6.0
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-13773
State
PUBLISHED
Assigner
ibm
Reserved
2026-06-29 21:52 UTC
Published
2026-06-30 19:20 UTC
Last updated
2026-06-30 19:37 UTC
Primary CWE
CWE-918
CWE-918 Server-Side Request Forgery (SSRF)
Vendor / Product
IBM / WebSphere Extreme Scale
Sources
cve.org  ·  NVD

Severity & Metrics

6.0 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
IBM WebSphere Extreme Scale — 8.6.1.0 ≤ 8.6.1.6
Weakness (CWE)
CWESourceDescription
CWE-918 cna CWE-918 Server-Side Request Forgery (SSRF)
CVSS scores (1)
ScoreSeverityVersionSourceVector
6.0 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
References (1)
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