CVE-2026-8400: CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') in IBM WebSphere Application Server
IBM WebSphere Application Server versions 8.5 and 9.0 contain a vulnerability in the ORB component of the IBM SDK, Java Technology Edition. This flaw allows a malicious IIOP server to cause the loading and instantiation of arbitrary classes, which is an unsafe reflection issue. The vulnerability is identified as CWE-470 and has a high severity with a CVSS score of 8.1.
AI Analysis
Technical Summary
CVE-2026-8400 is a vulnerability in IBM WebSphere Application Server 8.5 and 9.0 affecting the ORB component within the IBM SDK, Java Technology Edition. The flaw permits a malicious IIOP server to induce the loading and instantiation of arbitrary classes, representing unsafe reflection (CWE-470). This can lead to high impact on confidentiality, integrity, and availability as indicated by the CVSS vector (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H). No official remediation or patch information is currently provided.
Potential Impact
Successful exploitation could allow an unauthenticated remote attacker to cause the server to load and instantiate arbitrary classes, potentially leading to full compromise of confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround has been provided at this time.
CVE-2026-8400: CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') in IBM WebSphere Application Server
Description
IBM WebSphere Application Server versions 8.5 and 9.0 contain a vulnerability in the ORB component of the IBM SDK, Java Technology Edition. This flaw allows a malicious IIOP server to cause the loading and instantiation of arbitrary classes, which is an unsafe reflection issue. The vulnerability is identified as CWE-470 and has a high severity with a CVSS score of 8.1.
CVSS v3.1
Score 8.1high
Affected software
cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:websphere_application_server_liberty:continuous:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8400 is a vulnerability in IBM WebSphere Application Server 8.5 and 9.0 affecting the ORB component within the IBM SDK, Java Technology Edition. The flaw permits a malicious IIOP server to induce the loading and instantiation of arbitrary classes, representing unsafe reflection (CWE-470). This can lead to high impact on confidentiality, integrity, and availability as indicated by the CVSS vector (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H). No official remediation or patch information is currently provided.
Potential Impact
Successful exploitation could allow an unauthenticated remote attacker to cause the server to load and instantiate arbitrary classes, potentially leading to full compromise of confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround has been provided at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-05-12T13:57:37.652Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7360c9bf8831d539228d61
Added to database: 08/05/2026, 16:11:53 UTC
Last enriched: 08/05/2026, 16:27:36 UTC
Last updated: 08/05/2026, 16:44:05 UTC
Views: 9
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