IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH71756.

Attention: After installing the interim fix or fixpack, please follow the additional instructions provided in the interim fix link referenced below to complete the remediation.

For IBM WebSphere Application Server traditional:

For V9.0.0.0 through 9.0.5.28:
· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH71756
--OR--
· Apply Fix Pack 9.0.5.29 or later (targeted availability 3Q2026)

For V8.5.0.0 through 8.5.5.30:
· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH71756 and carefully follow the instructions for steps required after fix installation.
--OR--
· Apply Fix Pack 8.5.5.31 or later (targeted availability 3Q2026) and carefully follow the instructions in PH71756 for steps required after fixpack installation. .

Additional interim fixes may be available and linked off the interim fix download page.

CVE-2026-11595

References