CVE-2026-8858
High · 7.5CVSS
7.5
EPSS
0.4%
Published
Jun 22, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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