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PH71590:IBM WEBSPHERE APPLICATION SERVER IS VULNERABLE TO IDENTITY SPOOFING (CVE-2026-8644)

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Abstract

IBM WEBSPHERE APPLICATION SERVER IS VULNERABLE TO IDENTITY SPOOFING (CVE-2026-8644)

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image-20230610105140-2 THE ORIGINAL FIXES ON THIS PAGE HAVE BEEN SUPERSEDED BY LATER IFIXES
The original fixes on this page have been replaced by the fixes for issue DT496947. IFDT496947 fixes a non-integrity functional problem in the packaging for IFPH71590. If you have IFPH71590 installed on your system, you must remove it then install the IFDT496947 fix.

The fix for this issue is targeted for inclusion in 8.5.5.30 and 9.0.5.29.

For more information, see: Recommended Updates for WebSphere Application Server

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IMPORTANT NOTE:
WebSphere Application Server and Liberty fix access requires S&S Entitlement beginning in 2021. Use properly registered IDs to download the fixes in this table.  

Signature file is provided along with interim fix. See Verifying WebSphere Application Server release packages and Verifying Liberty release packages. 
 

IBM Installation Manager packages

DOWNLOADAPPLICABLE FIX PACKSRELEASE DATE

URL

9.0.5.28-WS-WAS-IFDT4969479.0.5.2811 Aug 2026FC
9.0.5.27-WS-WAS-IFDT4969479.0.5.2711 Aug 2026FC
9.0.5.25-WS-WAS-IFDT4969479.0.5.25 through 9.0.5.2611 Aug 2026FC
9.0.5.24-WS-WAS-IFDT4969479.0.5.2411 Aug 2026FC
9.0.5.20-WS-WAS-IFDT4969479.0.5.20 through 9.0.5.2311 Aug 2026FC
8.5.5.28-WS-WAS-IFDT4969478.5.5.28 through 8.5.5.2911 Aug 2026FC
8.5.5.25-WS-WAS-IFDT4969478.5.5.25 through 8.5.5.2711 Aug 2026FC
Note: FC stands for Fix Central. Review the What is Fix Central (FC)? FAQs for more details.

Problems Solved

 PH71422 PH71590 

Change History

  • 2026/06/01: Correct description of range for 9.0.5.24-WS-WAS-IFPH71422
  • 2026/06/12: There might be a performance impact caused by the fix for PH71422. The fixes for PH71422 are replaced by PH71590.
  • 2026/06/16: Add IFPH71590 for 9.0.5.28
  • 2026/08/11: Replace all IFPH71590 fixes with the fixes for DT496947

On

Technical Support

Contact IBM Support at https://www.ibm.com/mysupport/ or 1-800-IBM-SERV (US only).

Document Location

Worldwide

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Document Information

Modified date:
11 August 2026

UID

ibm17274652

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