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 8.5, and 9.0 and IBM WebSphere Application Server - Liberty Continuous delivery has a flaw in the ORB component in IBM SDK, Java Technology Edition, may allow a malicious IIOP server to induce loading and instantation of arbitrary classes.
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 8.5, and 9.0 and IBM WebSphere Application Server - Liberty Continuous delivery has a flaw in the ORB component in IBM SDK, Java Technology Edition, may allow a malicious IIOP server to induce loading and instantation of arbitrary classes.
CVSS v3.1
Score 8.1high
Affected software
IBM
WebSphere Application Server
IBM
WebSphere Application Server - Liberty
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
Threat ID: 6a7360c9bf8831d539228d61
Added to database: 08/05/2026, 16:11:53 UTC
Last enriched: 08/05/2026, 16:27:36 UTC
Last updated: 09/18/2026, 10:01:34 UTC
Views: 59
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.