CVE-2026-8858

high

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.

References

https://www.ibm.com/support/pages/node/7277344

Details

Source: Mitre, NVD

Published: 2026-06-22

Updated: 2026-06-24

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:A/AC:H/Au:N/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00249