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NVD Vulnerability Details :

CVE-2026-13773

Analyzed

Source-psirt@us.ibm.com

Published At-30 Jun, 2026 | 20:17

Updated At-02 Jul, 2026 | 18:26

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	6.0	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Primary	3.1	10.0	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
			N/A

Type: Secondary

Version: 3.1

Base score: 6.0

Base severity: MEDIUM

Vector:

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L

Type: Primary

Version: 3.1

Base score: 10.0

Base severity: CRITICAL

Vector:

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Type: N/A

Version:

Base score:

Base severity: N/A

Vector:

CPE Matches

IBM Corporation

>>websphere_extreme_scale>>Versions from 8.6.1.0(inclusive) to 8.6.1.6(inclusive)

cpe:2.3:a:ibm:websphere_extreme_scale:*:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
CWE-918	Primary	psirt@us.ibm.com

CWE ID: CWE-918

Type: Primary

Source: psirt@us.ibm.com

References

Hyperlink	Source	Resource
https://www.ibm.com/support/pages/node/7278594	psirt@us.ibm.com	Vendor Advisory

Hyperlink: https://www.ibm.com/support/pages/node/7278594

Source: psirt@us.ibm.com

Resource:

Vendor Advisory

CISA Catalog

Metrics

CPE Matches

Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References

Change History