Privilege Escalation Vulnerability in IBM WebSphere Application Server - Liberty
CVE-2026-18499

8.1HIGH

Key Information:

Vendor

IBM
Status
Websphere Application Server - Liberty
Vendor
CVE Published:
12 August 2026

What is CVE-2026-18499?

The IBM WebSphere Application Server - Liberty is susceptible to a privilege escalation vulnerability, particularly when utilized within Liberty collectives. This flaw can allow unauthorized users to gain elevated access to resources and functionalities that should have been restricted, thereby potentially compromising the integrity of the application environment. Users are urged to review the advisory and apply necessary patches to mitigate the risks associated with this vulnerability.

Affected Version(s)

WebSphere Application Server - Liberty 17.0.0.3 <= 26.0.0.8

References

https://www.ibm.com/support/pages/node/7283489
vendor-advisorypatch

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.