IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.3 IBM WebSphere Application Server Liberty is affected by privilege escalation. A privileged user could gain additional access to the application server.
IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH70327. To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to How to determine if Liberty is using a specific feature https://www.ibm.com/support/pages/node/6553910 .
For IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.3 using the restConnector-1.0 or restConnector-2.0 feature(s):
· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH70327 https://www.ibm.com/support/pages/node/7266844
--OR--
· Apply Liberty Fix Pack 26.0.0.4 or later (targeted availability 2Q2026).
Additional interim fixes may be available and linked off the interim fix download page.