Information Disclosure Vulnerability in IBM WebSphere Application Server Liberty
CVE-2026-78636

4.3MEDIUM

Key Information:

Vendor

IBM
Status
Websphere Application Server - Liberty
Vendor
CVE Published:
8 November 2026

What is CVE-2026-78636?

IBM WebSphere Application Server Liberty is susceptible to an information disclosure vulnerability due to unsafe class reflection in the JMX REST connector body parser. This flaw could potentially allow unauthorized access to sensitive information. Users are encouraged to update their systems to mitigate the risks associated with this vulnerability. For further details and recommended actions, refer to the IBM advisory.

Affected Version(s)

WebSphere Application Server - Liberty 17.0.0.3 <= 26.0.0.10

References

https://www.ibm.com/support/pages/node/7295268
vendor-advisorypatch

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.