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OpenAdvisories
High · 7.5 CVE-2026-8858 EUVD-2026-38284GHSA-mfq9-47xf-5654

WebSphere Application Server Remote Code Execution

Published Jun 22, 2026 · Updated Jul 9, 2026 · Assigned by ibm

Description

IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.

Affected products

VendorProductAffectedFixed
IBM WebSphere Application Server 8.5, 9.0 —

Advisories 1

References