CVE-2026-8858: IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere…

PriorityP347high8.8CVSS 3.1

AVAACLPRNUINSUCHIHAH

EPSS

0.26%

17.5th percentile

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

3 ranges

Vendor	Product	Version range	Fixed in
ibm	i	7.3 – 7.6	—
ibm	websphere_application_server	—	—
ibm	websphere_application_server	—	—

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